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Overview of the “International Guidelines for the Management and Treatment of Morquio A Syndrome”
REFERENCES: None required
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Guidelines establish the standard of care for Morquio A1
International guidelines for the evaluation, treatment, and symptom-based management of Morquio A have recently been published1 Guidelines were developed over 2 expert meetings of an international panel of specialists with extensive experience in managing Morquio A1 Specialties represented included1 Pediatrics Genetics Orthopedics Pulmonology Cardiology Anesthesiology The Guidelines were developed to provide a comprehensive standard of care to aid clinicians as they manage and treat this complex multisystemic disease1 Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a REFERENCES: [HEADLINE]: Hendriksz 2014/p 2/col 2/para 2 [SUBHEAD]: Hendriksz 2014 p 2/col 2/para 2 [BULLETS 1-3]: Hendriksz 2014/p 2/col 2/para 2 [SUB-BULLETS]: Hendriksz 2014/p 2/col 2/para 2 Bronchodilator
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The underlying cause of Morquio A is an enzyme deficiency that leads to multisystemic consequences1-3 Also referred to as MPS IVA, mucopolysaccharidosis IVA4 Serious, progressive, life-threatening disease5 Autosomal recessive lysosomal storage disorder (LSD) 4 Caused by deficient activity of N-acetylgalactosamine-6 sulfatase (GALNS), an enzyme that catalyzes the breakdown of 2 glycosaminoglycans (GAGs), keratan sulfate (KS) and chondroitin-6-sulfate (C6S) 5,6 Accumulation of these GAGs in lysosomes leads to cell engorgement and disruption of normal cell function2,3,7 Wide genotypic and phenotypic heterogeneity associated with Morquio A results in variable clinical presentation5 Multisystemic manifestations contribute to loss of endurance5 Varied spectrum of manifestations, organ involvement, and rate of disease progression necessitate an individualized management plan for each patient1,8 References: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A: doi: /ajmg.a Northover H, Cowie RA, Wraith JE. Mucopolysaccharidosis type IVA (Morquio syndrome): a clinical review. J Inherit Metab Dis. 1996;19(3): Tomatsu S, Montaño AM, Oikawa H, et al. Mucopolysaccharidosis type IVA (Morquio A disease): clinical review and current treatment: a special review. Curr Pharm Biotechnol. 2011;12(6): doi: / Tomatsu S, Montaño AM, Nishioka T, et al. Mutation and polymorphism spectrum of the GALNS gene in mucopolysaccharidosis IVA (Morquio A). Hum Mutat ;26(6): Harmatz P, Mengel KE, Giugliani R, et al. The Morquio A clinical assessment program: baseline results illustrating progressive, multisystemic clinical impairments in Morquio A subjects. Mol Genet Metab. 2013;109(1): doi: /j.ymgme Bank RA, Groener JEM, van Gemund JJ, et al. Deficiency in N-acetylgalactosamine-6-sulfate sulfatase results in collagen perturbations in cartilage of Morquio syndrome A patients. Mol Genet Metab. 2009;97(3): doi: /j.ymgme Montaño AM, Tomatsu S, Gottesman GS, Smith M, Orii T. International Morquio A Registry: clinical manifestation and natural course of Morquio A disease. J Inherit Metab Dis. 2007;30(2): doi: /s Walker R, Belani KG, Braunlin EA, et al. Anaesthesia and airway management in mucopolysaccharidosis. J Inherit Metab Dis. 2013;36(2): doi: /s Cell with GAG accumulation in lysosomes (Bank 2009) REFERENCES: [HEADLINE]: Hendriksz 2014/p 2/col 1/para1-2; Northover 1996/p 357/para 1; Tomatsu 2011/p 931/col 1/para 1/col 2/para 1/p 934/col 1/para 1 [BULLET 1]: Tomatsu 2005/p 500/col 1/para 1 [BULLET 2]: Harmatz 2013/p 2/col 1/para 2 [BULLET 3]: Tomatsu 2005/p 501/col 1/para 4 [BULLET 4]: Harmatz 2013/p 1/col 2/para 1/p 2/col 1/para 1; Bank 2009/p 1/col 1/para 1/col 2/para 1 [BULLET 5]: Northover 1996/p 357/para 1/p 358/para 3; Tomatsu 2011/p 931/col 2/para 1; Montano 2007/p. 166/col 1/para 4/col 2/para 1 [BULLET 6]: Harmatz 2013/p 2/col 1/para 2-3 [BULLET 7]: Harmatz 2013/p 4/col 1/para 2/col 2/para 1 [BULLET 8]: Walker 2013/p 211/col 2/para 2/p 213/fig 1; Hendriksz 2014/p 12/col 2/para 2 [PHOTO]: Bank 2009/p 3 Bronchodilator
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Morquio A leads to progressive organ damage and complex multisystemic manifestations1,2
Audiological Conductive and neurosensory hearing loss3,4 OPHTHALMOLOGICAL Diffuse corneal clouding, cataracts, reduction in visual acuity3,6,7 NeurologiCal Odontoid dysplasia, cervical myelopathy, cervical spine instability, tetraplegia2,3 Dental Dentinogenesis imperfecta, hypodontia, pointed cusps, spade-shaped incisors, thin enamel, abnormal buccal surfaces3,8 Abdominal Mild hepatosplenomegaly, hernias, loose stools, diarrhea, constipation, abdominal pain3-5 CARDIovascular Mitral and aortic valve stenosis and regurgitation, tricuspid regurgitation, hypertrophy3,9-11 Musculoskeletal Bone deformity, short stature, abnormal gait, joint laxity, contractures and subluxation, dysostosis multiplex2,3 REFERENCES: [HEADLINE]: Northover 1996 p. 357/para 1/p. 358/ para 3; Tomatsu 2011 p. 931/col 1/para 1/col 2/para 1/p. 932/col 1/para 1/col 2/para 1/p. 934/col 1/para 1; [AUDIOLOGICAL]: Hendriksz 2014/p 10/col 1/para 4; Hendriksz 2013/p 3/col 1/para 3/col 2/para 1-3 [NEUROLOGICAL]: Hendriksz 2014/p 9/col 2/para 1/p 3/table 1; Tomatsu 2011/p. 936/col 1/para 2/col 2/para1-2 [ABDOMINAL]: Hendriksz 2014/p 10/col 1/para 7/col 2/para 1; Tomatsu 2003/p. 66; Hendriksz 2013/p. 4/col 1/para 2 [MUSCULOSKELETAL]: Hendriksz 2014/p 5/col 2/para 1-2/p. 3/table 1; Tomatsu 2011/p. 934/table 2/col 2/para 2/p. 935/fig 3/p. 936/col 1/para 2 [OPHTHAL.]: Hendriksz 2014/p 9/col 2/para 4; Danes 1973/p. 3/table 1; Leslie 2005/p. 925/col 2/para 1-2/col 3/para 1 [DENTAL]: Hendriksz 2014/p 10/col 2/para 4; Kinions 1990/p. 1/col 1/para 2/p. 2/col 2/Table 1 [CARDIO]: Hendriksz 2014/p 9/col 1/para 2; Harmatz 2013/p. 6/col 2/para 2; Ireland 1981/p. 114/fig 1-2/col 1/para 3-4; John 1990/p. 747/table [RESPIRATORY]: Hendriksz 2014/p 8/col 2/para 1; Harmatz 2013/p. 6/col 1/para 2/col 2/para 1; Tomatsu 2011/p. 939/col 1/para 3/col 2/para 1 Respiratory Obstructive sleep apnea, respiratory infections, respiratory failure2,3,9 References: 1. Northover H, Cowie RA, Wraith JE. Mucopolysaccharidosis type IVA (Morquio syndrome): a clinical review. J Inherit Metab Dis. 1996;19(3): Tomatsu S, Montaño AM, Oikawa H, et al. Mucopolysaccharidosis type IVA (Morquio A disease): clinical review and current treatment: a special review. Curr Pharm Biotechnol. 2011;12(6): doi: / Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Hendriksz CJ, Al-Jawad M, Berger KI, et al. Clinical overview and treatment options for non-skeletal manifestations of mucopolysaccharidosis type IVA. J Inherit Metab Dis. 2013;36(2): doi: /s Shunji Tomatsu; International Morquio Organization. Mucopolysaccharidosis type IVA: Morquio A syndrome. Published Accessed November 12, Danes BS. Corneal clouding in the genetic mucopolysaccharidoses: a cell culture study. Clin Genet. 1973;4(1): Leslie T, Siddiqui MAR, Aitken DA, Kirkness CM, Lee WR, Fern AI. Morquio syndrome: electron microscopic findings. Br J Ophthalmol. 2005;89: Kinirons MJ, Nelson J. Dental findings in mucopolysaccharidosis type IV A (Morquio’s disease type A). Oral Surg Oral Med Oral Pathol. 1990;70(2): Harmatz P, Mengel KE, Giugliani R, et al. The Morquio A clinical assessment program: baseline results illustrating progressive, multisystemic clinical impairments in Morquio A subjects. Mol Genet Metab. 2013;109(1): doi: /j.ymgme Ireland MA, Rowlands DB. Mucopolysaccharidosis type IV as a cause of mitral stenosis in an adult. Br Heart J. 1981;46(1): John RM, Hunter D, Swanton RH. Echocardiographic abnormalities in type IV mucopolysaccharidosis. Arch Dis Child. 1990;65(7):
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Geneticist/metabolic specialist Orthopedic specialist
Management of the multisystemic consequences of Morquio A requires a multidisciplinary approach1 To address both the underlying cause and multisystemic complications, the Guidelines call for a coordinated approach consisting of a team of specialists anchored by a geneticist or metabolic physician1 Pulmonologist Dentist Ophthalmologist Gastroenterologist Cardiologist REFERENCES: [HEADLINE]: Hendriksz 2014/p 5/col 1/para 2 [SUBHEAD]: Hendriksz 2014/p 5/col 1/para 2/p 6/table 2 Geneticist/metabolic specialist Audiologist Neurosurgeon Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Orthopedic specialist 5
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Recommended management starts with diagnosis and continues with care throughout the patient’s lifetime1 At diagnosis, a team of specialists should be assembled by the patient’s geneticist or metabolic specialist to perform comprehensive assessments and to begin long-term management1 Diagnosis should be confirmed with an enzyme assay2,3 The Guidelines recommend the immediate initiation of enzyme replacement therapy (ERT) to mitigate disease progression and improve overall patient outcomes1 DIAGNOSIS The Guidelines outline essential ongoing assessments that allow for early intervention to address clinical manifestations and help the patient avoid permanent damage1 A coordinated healthcare team led by a geneticist or metabolic specialist is essential to ensure comprehensive care1 ONGOING ASSESSMENTS AND INTERVENTIONS REFERENCES: [HEADLINE]: Hendriksz 2014/p 3/col 1/para 1/p 5/col 1/para 2/p 12/col 2/para 1 [DIAGNOSIS BOX]: Hendriksz 2014/p 3/col 1/para 2/p 4/Fig. 2/col 1/para 2/col 2/para 2/p 5/col 1/para 2/p 6/Table II; Clarke 2011/p v13/col 1/para 1/col 2/para 1; Coutinho 2011/p 3/col 1/para 2 [ONGOING ASSESSMENTS BOX]: Hendriksz 2014p 5/col 1/para 2-4/p 6/Table II [TRANSITION BOX]: Hendriksz 2014/p 12/col 2/para 1 [CALL OUT]: Hendriksz 2014/p 5/col 1/para 2, 4/p 6/Table II Continued coordination is important as new specialists join the patient’s healthcare team1 TRANSITION TO ADULT CARE References: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Clarke LA, Winchester B, Giugliani R, Tylki-Szymańska A, Amartino H. Biomarkers for the mucopolysaccharidoses: discovery and clinical utility. Mol Genet Metab. 2012;106(4): doi: /j.ymgme Coutinho MF, Lacerda L, Alves S. Glycosaminoglycan storage disorders: a review. Biochem Res Int. 2012;2012: doi: /2012/
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Prompt diagnosis and comprehensive multisystemic evaluation is a critical first step toward establishing an individualized management plan1 Assessments RECOMMENDED AT DIAGNOSIS 1,a MUSCULOSKELETAL Physical examination, standardized upper/lower extremity function test, radiographs AUDIOLOGICAL Multimodal hearing assessment RESPIRATORY Forced vital capacity (FVC), maximum voluntary ventilation (MVV), respiratory rate, oxygen saturation, overnight sleep study ABDOMINAL Assessments of gastrointestinal problems NEUROLOGICAL Neurological exam, plain radiograph, magnetic resonance imaging (MRI) scan DENTAL Evaluation of oral health REFERENCES: [HEADLINE]: Hendriksz 2014/p 3/col 1/para 2/p 4/col 1/para 1 [SUBHEAD]: Hendriksz 2014/p 3/col 1/para 2/p 4/col 1/para 1 [BULLET]: Hendriksz 2014/p 5/col 1/para 2-4/p 6/Table II [ASSESSMENT TABLE]: Hendriksz 2014/p 6/Table II/p 10/col 2/para 2 CARDIOVASCULAR Electrocardiogram, echocardiogram, heart rate ENDURANCE 6-minute walk test (6MWT) OPHTHALMOLOGICAL Slit-lamp biomicroscopy of cornea, intraocular pressure, refractive error, examination of posterior segment QoL QUALITY OF LIFE (QoL) Reproducible, age-appropriate QoL questionnaires (eg, EQ-5D-5L) Multidisciplinary collaboration and referrals are recommended for optimal treatment, starting with comprehensive baseline assessments performed by the appropriate specialists1 Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a a For a comprehensive list of assessments, consult the Guidelines.
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ERT should be initiated upon diagnosis to replace deficient GALNS1
The goal of ERT in Morquio A is to reduce GAG accumulation in order to restore cellular function1,2 VIMIZIM® (elosulfase alfa) is the only ERT indicated for patients with Morquio A1 At a cellular level, GAGs accumulate in the lysosomes and occupy an increasingly greater area of the cytoplasm, which disrupts normal cell function.3,4 VIMIZIM is an exogenous recombinant human enzyme that replaces deficient GALNS in the lysosome.1 Within the lysosome, VIMIZIM increases catabolism of GAGs (KS and C6S)—restoring cell function. 1,2 REFERENCES: [HEADLINE]: VIMIZIM PI p. 8, section 12.1, para 1 [SUBHEAD]: VIMIZIM PI p. 8, section 12.1, para 1; Wood 2013 p. 2, col 1, para 2 [DESCRIPTION 1]: Coutinho 2012 p. 1, col 2, para 2; Hendriksz 2013 p. 2, col 1, para 1 [DESCRIPTION 2]: VIMIZIM PI p 8, section 12.1, para 1 [DESCRIPTION 3]: VIMIZIM PI p 8, section 12.1, para 1; References: 1. VIMIZIM [package insert]. Novato, CA: BioMarin Pharmaceutical Inc; Wood TC, Harvey K, Beck M, et al. Diagnosing mucopolysaccharidosis IVA. J Inherit Metab Dis. 2013;36(2): doi: /s Coutinho MF, Lacerda L, Alves S. Glycosaminoglycan storage disorders: a review. Biochem Res Int. 2012;2012: doi: /2012/ Hendriksz CJ, Al-Jawad M, Berger KI, et al. Clinical overview and treatment options for non-skeletal manifestations of mucopolysaccharidosis type IVA. J Inherit Metab Dis. 2013;36(2): doi: /s Please see Important Safety Information, including boxed warning, on slide 38.
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VIMIZIM® (elosulfase alfa) significantly improves endurance as measured by the 6MWT1,2
Guidelines confirm the 6MWT as a validated measure of endurance3 Compared with placebo, VIMIZIM® (elosulfase alfa) 2 mg/kg/week demonstrated a statistically significant improvement of meters (14.9%) in 6MWT distance in only 24 weeks (P=0.0174)1,2 Patients who continued receiving VIMIZIM through the extension trial stabilized walking ability after 72 weeks in extension study1,2 REFERENCES: [HEADLINE]: VIMIZIM PI/p. 9/sec. 14/para 3/p 10/sec. 14/para 1/Table 3; Hendriksz 2014 (Multi-domain)/p. 2/col 2/para 1 [SUBHEAD]: Hendriksz 2014/p 11/col 1/para 2 [BULLET 1]: VIMIZIM PI/p. 9/sec. 14/para 3/p. 10/sec. 14/table 3; [BULLET 2]: VIMIZIM PI/p. 10/section 14/table ;3 [CALL OUT]: Hendriksz 2014/p 3/col 1/para 1/p 4/col 1/para 2/col 2/para 2/p 5/col 1/para 2/p 12/col 2/para 1 Initiating ERT with VIMIZIM at diagnosis is considered an essential first step toward creating an effective management plan for patients with Morquio A.3 References: 1. VIMIZIM [package insert]. Novato, CA: BioMarin Pharmaceutical Inc; Hendriksz CJ, Giugliani R, Harmatz P, et al. Multi-domain impact of elosulfase alfa in Morquio A syndrome in the pivotal phase III trial. Mol Genet Metab. 2013;36(2): doi: /j.ymgme Hendriksz CJ, Al-Jawad M, Berger KI, et al. Clinical overview and treatment options for non-skeletal manifestations of mucopolysaccharidosis type IVA. J Inherit Metab Dis. 2013;36(2): doi: /s Please see Important Safety Information, including boxed warning, on slide 38.
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VIMIZIM® (elosulfase alfa) demonstrated a favorable trend in most additional trial end points1
Summary of VIMIZIM® (elosulfase alfa) clinical trial Week 24 efficacy end points1 REFERENCES: [HEADLINE]: Hendriksz 2014 (Multi-domain)/p 2/col 2/para 1/p. 6/Fig. 2 [TABLE]: Hendriksz 2014 (Multi-domain)/p 2/col 2/para 1/p. 6/Fig. 2 16 years old Please see Important Safety Information, including boxed warning, on slide 38. Reference: 1. Hendriksz CJ, Giugliani R, Harmatz P, et al. Multi-domain impact of elosulfase alfa in Morquio A syndrome in the pivotal phase III trial. Mol Genet Metab. 2013;36(2): doi: /j.ymgme
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VIMIZIM® (elosulfase alfa) has also shown a positive trend related to activities of daily living (ADL)1 ADL measured using MPS health assessment questionnaire (HAQ)1 Of the 52 HAQ questions, responses to 34 questions favored weekly treatment, 12 favored placebo, and 6 showed no difference1 REFERENCES [HEADLINE]: Hendriksz 2014 (Multi-domain)/p 5/col 2/para 3,4/appendix 2 [SUBHEAD]: Hendriksz 2014 (Multi-domain)/p 5/col 2/para 3,4/appendix 2 [BULLET]: Hendriksz 2014 (Multi-domain)/p 4/col 2/para 3/p 5/col 2/para 3,4/appendix 2 [TABLE]: Hendriksz 2014 (Multi-domain)/p 5/col 2/para 3,4/appendix 2 16 years old Please see Important Safety Information, including boxed warning, on slide 38. Reference: 1. Hendriksz CJ, Giugliani R, Harmatz P, et al. Multi-domain impact of elosulfase alfa in Morquio A syndrome in the pivotal phase III trial. Mol Genet Metab. 2013;36(2): doi: /j.ymgme
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VIMIZIM® (elosulfase alfa) safety and tolerability
176 patients ages 5 to 57 were enrolled in the 24-week, phase 3 pivotal study1 The most common adverse reactions that occurred were pyrexia, vomiting, headache, nausea, abdominal pain, chills, and fatigue1 Acute reactions requiring intervention were managed by Temporarily interrupting or discontinuing the infusion1 Administering additional antihistamines, antipyretics, or corticosteroids1 Reference: 1. VIMIZIM [package insert]. Novato, CA: BioMarin Pharmaceutical Inc; 28 REFERENCES: [FIRST BULLET]: VIMIZIM PI, p. 9, section 14, para 1 [SECOND BULLET]: VIMIZIM PI, p. 5, section 6.1, table 1 [THIRD BULLET]: VIMIZIM PI, p. 4, section 5.1, para 4 [TABLE]: VIMIZIM PI p. 5, section 6.1, table 1 [FOOTNOTE]: VIMIZIM PI p. 1, p. 7, section 8.4 aSafety and effectiveness in pediatric patients <5 years of age has not been established and is currently being evaluated.17 Please see Important Safety Information, including boxed warning, on slide 38.
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Guidelines emphasize need for ongoing multisystemic assessments1
Assessments1,a FREQUENCY1,a MUSCULOSKELETAL Standardized upper extremity function test, radiographs At diagnosis/baseline, annually RESPIRATORY FVC, MVV, respiratory rate, oxygen saturation, overnight sleep study At diagnosis/baseline, annually NEUROLOGICAL Neurological exam plain radiograph MRI scan CT scan At diagnosis/baseline, every visit (minimum, every 6 months) At diagnosis, every 1 to 3 years At diagnosis, annually As clinically indicated CARDIOVASCULAR Electrocardiogram echocardiogram heart rate At diagnosis, every 1 to 3 years, as clinically indicated At diagnosis, every 2 to 3 years, as clinically indicated At diagnosis, annually OPHTHALMOLOGICAL Refractive error and intraocular pressure At diagnosis, as clinically indicated AUDIOLOGICAL Multimodal hearing assessment At diagnosis, annually REFERENCES: [HEADLINE]: Hendriksz 2014/p 5/col 1/para 4/p 6/Table II [TABLE]: Hendriksz 2014/p 6/Table II/p 10/col 2/para 2 ABDOMINAL Assessments of gastrointestinal problems As clinically indicated DENTAL Evaluation of oral health At diagnosis, annually ENDURANCE 6MWT At diagnosis, annually, before and regularly after initiation of ERT QoL QUALITY OF LIFE (QoL) Reproducible, age-appropriate QoL questionnaires (eg, EQ-5D-5L) At diagnosis, annually Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a a Note: For additional detail, please consult the Guidelines.
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Assessments can reveal the need for specialized interventions to optimize patient outcomes1
Manifestation assessed1,a INTERVENTIONS1,a MUSCULOSKELETAL Upon diagnosis, refer to MPS-experienced orthopedic surgeon RESPIRATORY Pursue supportive therapies – Influenza and pneumococcus vaccinations – Bronchodilators – Prompt treatment of upper respiratory infections Spinal decompression Spinal fusion NEUROLOGICAL CARDIOVASCULAR Avoid beta-blockers to treat tachycardia Refractive correction/low vision aids Corneal transplantation OPHTHALMOLOGICAL Ventilation tubes Postaural hearing aids AUDIOLOGICAL REFERENCES: [HEADLINE]: Hendriksz 2014/p 5/col 1/para 4 [MUSCULO.]: Hendriksz 2014/p 5/col 2/para 3 [RESPIRATORY]: Hendriksz 2014/p 8/col 2/para 6/p 9/col 1/para 1 [NEURO.]: Hendriksz 2014/p 9/col 2/para 3/p 7/col 2/para 2 [CARDIO.]: Hendriksz 2014/p 9/col 1/para 4 [OPHTHAL.]: Hendriksz 2014/p 10/col 1/para 3 [AUDIO.]: Hendriksz 2014/p 10/col 1/para 6 [ABDOMINAL]: Hendriksz 2014/p 10/col 2/para 3 [DENTAL]: Hendriksz 2014/p 10/col 2/para 6 [ENDURANCE]: Hendriksz 2014/p 4/col 1/para 2 [QOL]: Hendriksz 2014/p 8/col 2/para 2 ABDOMINAL Surgical repair of recurrent hernias Preventative measures against formation of caries Fissure sealing of dentition DENTAL ENDURANCE ERT provides a systemic treatment approach QoL QUALITY OF LIFE (QoL) Efforts should be made to keep patients independently mobile as long as possible as QoL drops dramatically when patients become wheelchair dependent Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a a Note: For additional detail, please consult the Guidelines.
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Focus on: musculoskeletal involvement
Specialty area: Orthopedics Skeletal and joint abnormalities are the most apparent and prevalent disease manifestations of Morquio A1 Common manifestations include short stature, abnormalities in the spine, upper extremities, thorax, hips, and/or lower extremities, and joint and gait abnormalities1 - Unlike most other MPS disorders, patients with Morquio A have joint hypermobility throughout the body which can lead to spinal cord complications1 (see neurological involvement, slide 19) REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 5/col 2/para 1 [BULLET]: Hendriksz 2014/p 5/col 2/para 1 [SUB-BULLET]: Hendriksz 2014/p 2/col 1/para 2/p 5/col 2/para 2 [PHOTOS]: Image courtesy of Christina Lampe, MD and Ralph Lachman, MD; Atinga 2008/p 1632 [CALL OUT]: Harmatz 2013 MORCAP/p 3/col 1/para 2 (Left: Image courtesy of Christina Lampe, MD and Ralph Lachman, MD) (Right: Atinga 2008) Dysostosis multiplex changes in the pelvis and hips Knee valgus More than 70% of patients with Morquio A have had at least 1 surgical procedure.2 References: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Harmatz P, Mengel KE, Giugliani R, et al. The Morquio A clinical assessment program: baseline results illustrating progressive, multisystemic clinical impairments in Morquio A subjects. Mol Genet Metab. 2013;109(1): doi: /j.ymgme Note: For additional detail, please consult the Guidelines.
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Note: For additional detail, please consult the Guidelines.
Focus on: musculoskeletal involvement Specialty area: Orthopedics Guideline-recommended assessments Assessments1 FREQUENCY1 Standardized upper extremity function test, radiographs At diagnosis, annually Guideline-recommended interventions Immediately refer patients to a geneticist to begin ERT with VIMIZIM® (elosulfase alfa)1 Refer to an orthopedic surgeon with experience treating MPS diseases1 REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 6/Table II [BULLETS]:Hendriksz 2014/p 4/col 2/para 2/p 5/col 2/para 3 Note: For additional detail, please consult the Guidelines. Please see Important Safety Information, including boxed warning, on slide 38. Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a
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Narrow, tortuous trachea
Focus on: respiratory involvement Specialty area: Pulmonology Respiratory impairment is the leading cause of morbidity and mortality in patients with Morquio A1 Respiratory impairment can be due to obstructive or restrictive disease1 Narrowed and tortuous airways can be caused by a combination of GAG deposits in airway walls, abnormalities in the skull and spine, tracheal distortion, tracheobronchomalacia, and thickened secretions1 Respiratory complications can contribute to reduced endurance in patients with Morquio A1 Patients with Morquio A have a significant increase in surgical risks as a result of respiratory manifestations of the condition1 Sleep-disordered breathing can be an early sign of respiratory impairment1 GAG deposits Narrow trachea Narrow, tortuous trachea REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 8/col 1/para 3 [BULLET 1]: Hendriksz 2014/p 8/col 1/para 3 [BULLET 2]: Hendriksz 2014/p 8/col 2/para 1 [BULLET 3]: Hendriksz 2014/p 8/col 2/para 3 [BULLET 4]: Hendriksz 2014/p 9/col 1/para 1 [BULLET 5]: Hendriksz 2014/p 8/col 2/para 1 [PHOTOS]: Berger 2013/p 205 (Left: Berger 2013) (Right: Image FPO) GAG deposits within the upper airway causing narrowing of the pharynx and larynx Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
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Focus on: respiratory involvement
Specialty area: Pulmonology Guideline-recommended assessments Assessments1 FREQUENCY1 FVC, MVV, respiratory rate, oxygen saturation, overnight sleep study At diagnosis, annually Guideline-recommended interventions Patients may benefit from supportive therapies such as regular influenza and pneumococcus vaccinations, bronchodilators, and aggressive, timely treatment of upper respiratory infections1 REFERENCES: [HEADLINE]: No reference needed [TABLE]: Hendriksz 2014/p 6/Table II [BULLET]: Hendriksz 2014/p 8/col 2/para 6/p 9/col 1/para 1 [CALL OUT]: Hendriksz 2014/p 9/col 1/para 1 Respiratory complications pose an increased surgical risk. 1 See Surgical intervention section, slide 33. 16 years old Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
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Focus on: neurological involvement
Specialty area: Neurology Cervical spine instability, spinal cord compression and resulting surgical risks drive the critical need to identify and treat instability in the spine1 Identify spinal cord compression early and correlate findings with imaging studies of the spine to avoid long-term consequences1 Signs of severe spinal cord compression1 sensory anomalies upper and lower extremity weakness lower back pain urinary dysfunction unsteady gait radiating leg pain paralysis REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 9/col 2/para 1-3 [BULLET 1]: Hendriksz 2014/p 6/table 2/p 9/col 2/para 2 [BULLET 2]: Hendriksz 2014/p 9/col 2/para 1 [PHOTO]: Solanki 2013/p 345/figure 5 T2 hyperintensity and focal atrophy 16 years old (Solanki 2013) Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
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Focus on: neurological involvement
Specialty area: Neurology Guideline-recommended assessments Assessments1 FREQUENCY1 Neurological exam Plain radiograph MRI scan CT scan At diagnosis/baseline, every visit (minimum, every 6 months) At diagnosis, every 1 to 3 years At diagnosis, annually As clinically indicated Guideline-recommended interventions When warranted, interventions can include spinal decompression, fusion, or a combination of both1 REFERENCES: [HEADLINE]: No reference needed [TABLE]: Hendriksz 2014/p 6/Table II [BULLET]: Hendriksz 2014/p 7/col 2/para 2 [CALL OUT]: Hendriksz 2014/p 7/col 2/para 2/p 8/col 1/para 1 Pre-surgical assessments are required to minimize the risks associated with spinal cord compression.1 See surgical intervention, slide 33. 16 years old Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
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Focus on: cardiovascular involvement
Specialty area: Cardiology High heart rate in patients with Morquio A compensates for small cardiac stroke volume1 Cardiac valve abnormalities can include valve thickening, regurgitation, and/or stenosis1 Patients with Morquio A may also experience myocardial hypertrophy and/or cardiomegaly1,2 Impaired cardiac function contributes to reduced endurance in patients with Morquio A1,2 REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 9/col 1/para 2 [BULLET 1]: Hendriksz 2014/p 9/col 1/para 2 [BULLET 2]: Hendriksz 2014/p 9/col 1/para 2 Harmatz 2013 MORCAP/p 3/col 2/para 2 [BULLET 3]: Harmatz Morcap 2013/p 2/col 1/para 2-3/p 4/col 1/para 2/col 2/para 1/p 6/col 2/para 1; Hendriksz 2014/p 11/col 1/para 1 [PHOTOS]: Ireland 1981/p 114/figs 1-2 Autopsy specimen of patient with Morquio A shows thickening of mitral valve cusps, tricuspid valve cusps, and chordae 16 years old (Ireland 1981) References: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Harmatz P, Mengel KE, Giugliani R, et al. The Morquio A clinical assessment program: baseline results illustrating progressive, multisystemic clinical impairments in Morquio A subjects. Mol Genet Metab. 2013;109(1): doi: /j.ymgme Note: For additional detail, please consult the Guidelines.
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Focus on: cardiovascular involvement
Specialty area: Cardiology Guideline-recommended assessments Assessments1 FREQUENCY1 Electrocardiogram Echocardiogram Heart rate At diagnosis, every 1 to 3 years, as clinically indicated At diagnosis, every 2 to 3 years, as clinically indicated At diagnosis, annually Guideline-recommended interventions Treatment of tachycardia with beta-blockers should be avoided1 Valve replacement may be considered for patients with severe aortic or mitral valve disease1 REFERENCES: [HEADLINE]: No reference needed [TABLE]: Hendriksz 2014/p 6/Table II [BULLET 1]: Hendriksz 2014/p 9/col 1/para 4 [BULLET 2]: Hendriksz 2014/p 9/col 1/para 5 16 years old Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
23
Focus on: ophthalmological involvement
Specialty area: Ophthalmology Ongoing assessments of ophthalmological conditions related to Morquio A help identify the need for corrective interventions1 Diffuse corneal clouding and refractive error problems (eg, astigmatism, myopia, and hyperopia) are typical for patients with Morquio A1 REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 10/col 1/para 2,3 [BULLET]: Hendriksz 2014/p 9/col 2/para 4 [PHOTO]: Image courtesy of Gail Summers Corneal clouding (Image courtesy of C Gail Summers) 16 years old Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
24
Focus on: ophthalmological involvement
Specialty area: Ophthalmology Guideline-recommended assessments Assessments1 FREQUENCY1 Slit-lamp biomicroscopy of cornea Intraocular pressure Refractive error Examination of posterior segment Scotopic and photopic electroretinogram At diagnosis, as clinically indicated As clinically indicated Guideline-recommended interventions REFERENCES: [HEADLINE]: No reference needed [TABLE]: Hendriksz 2014/p 6/Table II [BULLET 1]: Hendriksz 2014/p 10/col 1/para 3 [BULLET 2]: Hendriksz 2014/p 10/col 1/para 3 Corneal clouding can be managed surgically by corneal transplant; note that concomitant retinopathy, glaucoma, or optic nerve atrophy can reduce efficacy of corneal transplant1 Impaired vision may be improved by refractive correction or low-vision aids1 16 years old Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
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Focus on: audiological involvement
Specialty area: Audiology Hearing loss is underestimated in patients with Morquio A despite the onset of auditory impairment in the first decade of life1 Patients with Morquio A typically develop neurosensory or mixed conductive and neurosensory hearing loss1 Common causes of hearing loss can include recurrent respiratory tract infections or otitis media, deformity of the ossicles, and/or abnormalities of the inner ear1 REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 10/col 1/para 4-5 [BULLET 1]: Hendriksz 2014/p 10/col 1/para 4 [BULLET 2]: Hendriksz 2014/p 10/col 1/para 4 16 years old Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
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Focus on: audiological involvement
Specialty area: Audiology Guideline-recommended assessment Assessment1 FREQUENCY1 Multimodal hearing assessment At diagnosis, annually Guideline-recommended interventions Ventilation tubes treat conductive hearing loss from middle ear fluid1 Postaural hearing aids may be most appropriate if a progressive neurosensory element to hearing loss is present1 REFERENCES: [HEADLINE]: No reference needed [TABLE]: Hendriksz 2014/p 6/Table II [BULLET 1]: Hendriksz 2014/p 10/col 1/para 6 [BULLET 2]: Hendriksz 2014/p 10/col 1/para 6 [CALL OUT]: Hendriksz 2014/p 10/col 1/para 6 T-tubes should be used the first time fluid is retained in the middle ear due to the anesthetic risks and risk of reoccurrence.1 16 years old Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
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Focus on: abdominal involvement
Specialty area: Gastroenterology Although the prevalence of abdominal conditions is lower in patients with Morquio A than in other MPS disorders, regular assessment is recommended1 Routine clinical evaluations may reveal umbilical, inguinal, or bilateral diaphragmatic hernias, hepatomegaly, splenomegaly, and other gastrointestinal disorders (eg, chronic constipation, diarrhea)1 Guideline-recommended interventions Hernias can be surgically repaired by herniorrhaphy and frequently recur1 REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 10/col 1/para 7/col 2/para 1-2 [BULLET 1]: Hendriksz 2014/p 10/col 1/para 7/col 2/para 1 [BULLET 2]: Hendriksz 2014/p 10/col 2/para 3 16 years old Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
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Focus on: dental involvement
Specialty area: Dentistry Physiological abnormalities in dentition results in caries formation susceptibility1 Small, widely spaced teeth, often with thin, structurally weak enamel and small pointed cusps, spade-shaped incisors, pitted buccal surfaces, and other abnormalities of dentition are characteristic of Morquio A1 Regular dental visits are recommended1 Guideline-recommended interventions Caries prevention can include fluoride supplementation and/or fissure sealing as appropriate1 REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 10/col 2/para 4 [BULLET 1]: Hendriksz 2014/p 10/col 2/para 4 [BULLET 2]: Hendriksz 2014/p 6/Table II [BULLET 3]: Hendriksz 2014/p 10/col 2/para 6 [PHOTO]: Hendriksz 2014/p 54 Pediatric (top) and adult (bottom) teeth with typical features: widely spaced teeth, pointed cusps, and spade-shaped incisors 16 years old (Hendriksz 2014) Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
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Note: For additional detail, please consult the Guidelines.
Focus on: endurance involvement Specialty area: Genetics Multisystemic factors may reduce the endurance of patients with Morquio A and warrant a systemic treatment approach1,2 Impaired cardiac, respiratory, musculoskeletal, and/or neurological function can contribute to reduced endurance and a resulting impact on functional status/mobility and quality of life1,2 VIMIZIM® (elosulfase alfa) has been approved for Morquio A syndrome and improves endurance as measured by 6MWT3 REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 4/col 1/para 2/ col 2/para 2/p 11/col 1/para 1 Harmatz 2013/p 4/col 1/para 2/col 2/para 1 [BULLET 1]: Hendriksz 2014/p 11, col 1, para 1; [BULLET 2]: VIMIZIM PI/p 2/section 1/p 8/section 12.1/p 9/section 14/para 3/p 10/table 3 16 years old Note: For additional detail, please consult the Guidelines. References: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Harmatz P, Mengel KE, Giugliani R, et al. The Morquio A clinical assessment program: baseline results illustrating progressive, multisystemic clinical impairments in Morquio A subjects. Mol Genet Metab. 2013;109(1): doi: /j.ymgme VIMIZIM [package insert]. Novato, CA: BioMarin Pharmaceutical Inc; 2014. Please see Important Safety Information, including boxed warning, on slide 38.
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Note: For additional detail, please consult the Guidelines.
Focus on: endurance involvement Specialty area: Genetics Guideline-recommended assessment Assessment1 FREQUENCY1 6MWT At diagnosis, annually, before and regularly after initiation of ERT Guideline-recommended interventions The guidelines highlight the importance of initiating ERT as soon as possible upon diagnosis to address the progressive decline in endurance caused by Morquio A1 REFERENCES: [HEADLINE]: No reference needed [TABLE]: Hendriksz 2014/p 6/Table II [BULLET 1]: Hendriksz 2014/p 4/col 1/para 2/col 2/para 2 [CALL OUT]: Hendriksz 2014/p 4/col 1/para 2/col 2/para 2/p 5/col 1/para 2 The initiation of ERT with VIMIZIM® (elosulfase alfa) at diagnosis is critical to help maximize patient outcomes and improve overall care.1 16 years old Note: For additional detail, please consult the Guidelines. Please see Important Safety Information, including boxed warning, on slide 38. Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a
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Focus on: disease burden
QoL Specialty area: Primary care Pain, loss of mobility, frequent surgical interventions, and other factors significantly impact the QoL of patients with Morquio A1 Pain is a major but underreported symptom of Morquio A that is often related to musculoskeletal problems and may occur throughout the body1 Loss of independent mobility considerably contributes to diminution of QoL1 Guideline-recommended assessments Assessments1 FREQUENCY1 Pain assessment QoL questionnaire Functional test/ADL questionnaire At diagnosis, every 6 months, pre-ERT At diagnosis, annually, pre-ERT REFERENCES: [HEADLINE]: No reference needed [SUBHEAD]: Hendriksz 2014/p 11/col 2/para 4 [BULLET 1]: Hendriksz 2014/p 11/col 2/para 2 [BULLET 2]: Hendriksz 2014//p 11/col 2/para 2 [TABLE]: Hendriksz 2014/p 6/Table II [BULLET 3]: Hendriksz 2014/p 11/col 2/para 5 [BULLET 4]: Hendriksz 2014/p 8/col 1/para 2 Guideline-recommended interventions Simple interventions may considerably improve the functional capacity and QoL of patients with Morquio A1 Efforts should be made to keep patients independently mobile as long as possible1 16 years old Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Note: For additional detail, please consult the Guidelines.
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Patients with Morquio A face high surgical risk1-3
Cervical instability Compromised respiratory function Cardiac problems High anesthesia risk Inability to ventilate/ intubate Need for reintubation Airway obstruction REFERENCES: [HEADLINE]: Walker 2013/p 213/Figure 1/p 214/col 2/para 5 [NAVY BLUE BOXES]: Solanki 2013/p 340/col 1/para 3/p 351/col 2/para 2; Walker 2013/p 214/col 2/para 3/p 213/Figure 1 [GRAY CIRCLE]: Hendriksz 2014/p 8/col 1/para 1 [BLUE CIRCLES]: Solanki 2013/p351/col 2/para2/lines 9-11/p 352/col 2/para 1 [CALL OUT]: Lavery 2014/p 4/figure 1a Surgical complications result in an 11% mortality rate in the Morquio A population.4 References: 1. Walker R, Belani KG, Braunlin EA, et al. Anaesthesia and airway management in mucopolysaccharidosis. J Inherit Metab Dis. 2013;36(2): doi: /s Solanki GA, Martin KW, Theroux MC, et al. Spinal involvement in mucopolysaccharidosis IVA (Morquio-Brailsford or Morquio A syndrome): presentation, diagnosis and management. J Inherit Metab Dis. 2013;36(2): doi: /s Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Lavery C, Hendriksz C. Mortality in patients with Morquio syndrome A. J Inherit Metab Dis Rep. 2015;15: doi: /8904_2014_298.
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Surgical interventions require strong planning and coordination1,2
Creating a surgical plan should involve a multidisciplinary team of specialists who are also experienced in treating patients with Morquio A3 Specialties represented may include anesthesiology, pulmonology, neurosurgery, cardiology, ENT, and radiology3 In addition to the management guidelines, specialists should consult orthopedic and surgical guidelines (listed on slide 37) Key components of surgical planning include anesthetic care, continuous monitoring, and postoperative care1-4 REFERENCES: [HEADLINE]: Walker 2013/p 212/col 1/para 2-3; Theroux 2012/p 4/col 1/para 4/col 2/para 1 [SUBHEAD 1]: Hendriksz 2014/p 5/col 1/para 3-4 [BULLET 1]: Hendriksz 2014/p 5/col 1/para 3-4/p 6/table 2 [BULLET 2]: No reference needed [SUBHEAD 2]: Walker 2013/p 212/col 2/para 3/p 215/col 2/para 1/p 216/col 1/para 5; Hendriksz 2014/p 12/col 1/para 3 [TABLE]: (Presurgical): Walker 2013/p 215/col 1/para 2 (Perioperative): Theroux 2012/p 6/col 2/para 2 (Anesthetic care): Solanki 2013/p 352/col 1/para 3 (Monitoring): Solanki 2013/p 352/col 1/para 3/p 353/col 1/para 1 (Postoperative care): Solanki 2013/p 352/col 1/para 4/col 2/para 1 Bronchodilator References: 1. Walker R, Belani KG, Braunlin EA, et al. Anaesthesia and airway management in mucopolysaccharidosis. J Inherit Metab Dis. 2013;36(2): doi: /s Theroux MC, Nerker T, Ditro C, Mackenzie WG. Anesthetic care and perioperative complications of children with Morquio syndrome. Paediatr Anaesth. 2012;22(9): doi: /j x. 3. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Solanki GA, Martin KW, Theroux MC, et al. Spinal involvement in mucopolysaccharidosis IVA (Morquio-Brailsford or Morquio A syndrome): presentation, diagnosis and management. J Inherit Metab Dis. 2013;36(2): doi: /s
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Make transitioning to adult care part of the individual management plan
As patients get older they need to begin managing their own healthcare1 Patients need you to help guide their transitions to ensure adult services are knowledgeable in managing Morquio A and to ensure that they aren’t lost to follow-up1 It is important to have a formal, site-specific transition strategy1 This should include joint visits with the pediatrician and physician (eg, coordinating the adult patient care for a few years and adding patient information to a registry accessible to the adult team)1 Encourage patients and their families to be involved in this process1 REFERENCES: [HEADLINE]: No reference needed [BULLET 1]: Hendriksz 2014/p 12/col 1/para 5/col 2/para 1 [BULLET 2]: Hendriksz 2014/p 12/col 2/para 1 [BULLET 3 (WITH SUB-BULLETS)]: Hendriksz 2014/p 12/col 2/para 1 Reference: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a
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Highlights from the management and treatment guidelines
Morquio A syndrome is associated with profound skeletal and joint abnormalities and significant nonskeletal manifestations1 The multisystemic complications caused by Morquio A require coordinated multidisciplinary care across a wide range of specialists with a geneticist at the center of care1 Early diagnosis and baseline testing establish the basis for a comprehensive management plan1 The initiation of ERT with VIMIZIM® (elosulfase alfa) at diagnosis is critical to help maximize outcomes and mitigate disease progression, improving overall care1-3 Ongoing assessments throughout the lifetime of each patient with Morquio A allow for interventions to help those individuals avoid permanent damage1 Surgical risks associated with Morquio A require thorough peri- and postoperative planning and care4-6 REFERENCES: [BULLET 1]: Hendriksz 2014/p 3/Table 1/p 5/col 2/para 1 [BULLET 2]: Hendriksz 2014/p 5/col 1/para 2 [BULLET 3]: Hendriksz 2014/p 3/col 1/para 2/p 4/Fig. 2/p 5/col 1/para 2-4/p 6/Table II; [BULLET 4]: VIMIZIM PI/p. 9/sec. 14/para 3/p 10/sec. 14/para 1/Table 3; Hendriksz 2014 (Multi-domain)/p. 2/col 2/para 1; Hendriksz 2014/p 3/col 1/para 2/p 4/Fig. 2/col 1/para 2/col 2/para 2/p 5/col 1/para 2-4/p 6/Table II; [BULLET 5]: Hendriksz 2014/p 12/col 2/para 1/p 5/col 1/para 4/p 6/Table 2 [BULLET 6]: (Presurgical): Walker 2013/p 215/col 1/para 2 (Perioperative): Theroux 2012/p 6/col 2/para 2 (Anesthetic care): Solanki 2013/p 352/col 1/para 3 (Monitoring): Solanki 2013/p 352/col 1/para 3/p 353/col 1/para 1 (Postoperative care): Solanki 2013/p 352/col 1/para 4/col 2/para 1 For additional resources related to the optimal care of patients with Morquio A, please refer to slide 37. References: 1. Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a VIMIZIM [package insert]. Novato, CA: BioMarin Pharmaceutical Inc; Hendriksz CJ, Giugliani R, Harmatz P, et al. Multi-domain impact of elosulfase alfa in Morquio A syndrome in the pivotal phase III trial. Mol Genet Metab. 2013;36(2): doi: /j.ymgme Walker R, Belani KG, Braunlin EA, et al. Anaesthesia and airway management in mucopolysaccharidosis. J Inherit Metab Dis. 2013;36(2): doi: /s Theroux MC, Nerker T, Ditro C, Mackenzie WG. Anesthetic care and perioperative complications of children with Morquio syndrome. Paediatr Anaesth. 2012;22(9): doi: /j x. 6. Solanki GA, Martin KW, Theroux MC, et al. Spinal involvement in mucopolysaccharidosis IVA (Morquio-Brailsford or Morquio A syndrome): presentation, diagnosis and management. J Inherit Metab Dis. 2013;36(2): doi: /s Please see Important Safety Information, including boxed warning, on slide 38.
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Morquio A Registry Study (MARS)
Morquio A Registry Study (MARS) is a multicenter, multinational, observational Registry of subjects diagnosed with Morquio A MARS is designed to gain better understanding of the variability and progression of the disease in the population as a whole, and to monitor and evaluate long-term treatment effects of VIMIZIM® (elosulfase alfa) All subjects with a confirmed diagnosis of Morquio A disease may be eligible to participate in this Registry It is not required that subjects receive VIMIZIM to be eligible to participate The Registry started enrollment and is currently open in the EU and USA For information on participation please contact the BioMarin MARS Team at NOTES: Inform patients of the Morquio A Registry established in order to better understand the variability and progression of the disease in the population as a whole, and to monitor and evaluate long-term treatment effects of VIMIZIM. The Morquio A Registry will also monitor the effect of VIMIZIM on pregnant women, nursing mothers and their offspring, and determine if VIMIZIM is excreted in breast milk. Patients should be encouraged to participate and advised that their participation is voluntary and may involve long-term follow-up. For more information, contact REFERENCES: No references needed. Please see Important Safety Information, including boxed warning, on slide 38.
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Key Morquio A treatment and management publications
For a more in-depth look at how to specifically manage and treat patients with Morquio A, experts recommend the following resources: Hendriksz CJ, Berger KI, Giugliani R, et al. International guidelines for the management and treatment of Morquio A syndrome. Am J Med Genet Part A. 2014;9999A:1-15. doi: /ajmg.a Solanki GA, Martin KW, Theroux MC, et al. Spinal involvement in mucopolysaccharidosis IVA (Morquio- Brailsford or Morquio A syndrome): presentation, diagnosis and management. J Inherit Metab Dis ;36(2): doi: /s Berger KI, Fagondes SC, Giugliani R, et al. Respiratory and sleep disorders in mucopolysaccharidosis. J Inherit Metab Dis. 2013;36(2): doi: /s Theroux MC, Nerker T, Ditro C, Mackenzie WG. Anesthetic care and perioperative complications of children with Morquio syndrome. Paediatr Anaesth. 2012;22(9): doi: /j x. American Thoracic Society Committee on Proficiency Standards for Clinical Pulmonary Function Laboratories. ATS statement: guidelines for the six-minute walk test. Am J Respir Crit Care Med ;166(1): doi: /rccm.166/1/111. Hendriksz CJ, Burton B, Fleming TR, et al. Efficacy and safety of enzyme replacement therapy with BMN 110 (elosulfase alfa) for Morquio A syndrome (mucopolysaccharidosis IVA): a phase 3 randomised placebo-controlled study [published online ahead of print May 9, 2014]. J Inherit Metab Dis. doi: /s REFERENCES: No references required.
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Important Safety Information
INDICATION VIMIZIM® (elosulfase alfa) is indicated for patients with Mucopolysaccharidosis type IVA (MPS IVA; Morquio A syndrome). IMPORTANT SAFETY INFORMATION Life-threatening anaphylactic reactions have occurred in some patients during VIMIZIM® (elosulfase alfa) infusions. Anaphylaxis, presenting as cough, erythema, throat tightness, urticaria, flushing, cyanosis, hypotension, rash, dyspnea, chest discomfort, and gastrointestinal symptoms (eg, nausea, abdominal pain, retching, and vomiting) in conjunction with urticaria, have been reported to occur during VIMIZIM infusions, regardless of duration of the course of treatment. Closely observe patients during and after VIMIZIM administration and be prepared to manage anaphylaxis. Inform patients of the signs and symptoms of anaphylaxis and have them seek immediate medical care should symptoms occur. Patients with acute respiratory illness may be at risk of serious acute exacerbation of their respiratory compromise due to hypersensitivity reactions, and require additional monitoring. REFERENCES: No references needed. Due to the potential for anaphylaxis, appropriate medical support should be readily available when VIMIZIM is administered and for an appropriate period of time following administration. In clinical trials, cases of anaphylaxis occurred as early as 30 minutes from the start of infusion and up to three hours after infusion, and as late into treatment as the 47th infusion.
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Important Safety Information (cont’d)
In clinical trials, hypersensitivity reactions have been observed as early as 30 minutes from the start of infusion but as late as six days after infusion. Frequent symptoms of hypersensitivity reactions (occurring in more than 2 patients) included anaphylactic reactions, urticaria, peripheral edema, cough, dyspnea, and flushing. Because of the potential for hypersensitivity reactions, administer antihistamines with or without antipyretics prior to infusion. Management of hypersensitivity reactions should be based on the severity of the reaction and include slowing or temporary interruption of the infusion and/or administration of additional antihistamines, antipyretics, and/or corticosteroids for mild reactions. However, if severe hypersensitivity reactions occur, immediately stop the infusion of VIMIZIM and initiate appropriate treatment. Consider the risks and benefits of re-administering VIMIZIM following a severe reaction. Patients with acute febrile or respiratory illness at the time of VIMIZIM infusion may be at higher risk of life-threatening complications from hypersensitivity reactions. Careful consideration should be given to the patient’s clinical status prior to administration of VIMIZIM and consider delaying the VIMIZIM infusion. Sleep apnea is common in MPS IVA patients. Evaluation of airway patency should be considered prior to initiation of treatment with VIMIZIM. Patients using supplemental oxygen or continuous positive airway pressure (CPAP) during sleep should have these treatments readily available during infusion in the event of an acute reaction, or extreme drowsiness/sleep induced by antihistamine use. REFERENCES: No references needed.
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Important Safety Information (cont’d)
Spinal or cervical cord compression (SCC) is a known and serious complication of MPS IVA and may occur as part of the natural history of the disease. In clinical trials, SCC was observed both in patients receiving VIMIZIM and patients receiving placebo. Patients with MPS IVA should be monitored for signs and symptoms of SCC (including back pain, paralysis of limbs below the level of compression, urinary and fecal incontinence) and given appropriate clinical care. All patients treated with VIMIZIM 2 mg/kg once per week in the placebo-controlled trial developed anti-drug antibodies. The relationship between the presence of neutralizing antibodies and long-term therapeutic response or occurrence of anaphylaxis or other hypersensitivity reactions could not be determined. VIMIZIM should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. It is not known if VIMIZIM is present in human milk. Exercise caution when administering VIMIZIM to a nursing mother. There is a Morquio A Registry that collects data on pregnant women and nursing mothers with MPS IVA who are treated with VIMIZIM. Contact for information and enrollment. Safety and effectiveness in pediatric patients below 5 years of age has not been established and is currently being evaluated. REFERENCES: No references needed.
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Important Safety Information (cont’d)
In clinical trials, the most common adverse reactions (≥10%) occurring during infusion included pyrexia, vomiting, headache, nausea, abdominal pain, chills, and fatigue. The acute reactions requiring intervention were managed by either temporarily interrupting or discontinuing infusion, and administering additional antihistamine, antipyretics, or corticosteroids. To report SUSPECTED ADVERSE REACTIONS contact BioMarin Pharmaceutical Inc. at , or FDA at FDA-1088 or go to Please see accompanying full Prescribing Information, including boxed warning, or visit REFERENCES: No references needed.
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