1. Omalizumab Drugbank ID : DB00043
Protein chemical formula : C6450H9916N1714O2023S38
Protein average weight :
Half-life : 26 days

2. Description Indication Pharmacodynamics Mechanism Of Action
A recombinant DNA-derived humanized IgG1k monoclonal antibody that selectively binds to human immunoglobulin E (IgE). Xolair is produced by a Chinese hamster ovary cell suspension culture in a nutrient medium containing the antibiotic gentamicin.
Indication
For treatment of asthma caused by allergies
Pharmacodynamics
Xolair inhibits the binding of IgE to the high-affinity IgE receptor (FceRI) on the surface of mast cells and basophils. Reduction in surface-bound IgE on FceRI-bearing cells limits the degree of release of mediators of the allergic response. Xolair is used to treat severe, persisten asthma.
Mechanism Of Action
Xolair binds to IgE (a class of antibodies normally secreted in allergic responses), which prevents their binding to mast cells and basophils.

3. Volume of Distribution Categories
Metabolism
Most likely removed by opsonization via the reticuloendothelial system.
Route of elimation
Liver elimination of IgG includes degradation in the liver reticuloendothelial system (RES) and endothelial cells. Intact IgG is also excreted in bile.
Volume of Distribution
78 ± 32 mL/kg
Categories
Anti-Allergic Agents and Anti-Asthmatic Agents and Immunosuppressive Agents
Affected Organism
Humans and other mammals
Patents
Country Patent Number Approved Expires (estimated)
Canada
Canada

4. Sequence Targets Omalizumab heavy chain
VQLVESGGGLVQPGGSLRLSCAVSGYSITSGYSWNWIRQAPGKGLEWVASITYDGSTNYADSVKGRFTISRDDSKNTFYLQMNSLRAEDTAVYYCARGSHYFGHWHFAVWGQGTLVTVSSGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKAEPKSCDKTHTCPPCPAPELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRDELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK Omalizumab light chain
DIQLTQSPSSLSASVGDRVTITCRASQSVDYDGDSYMNWYQQKPGKAPKLLIYAASYLESGVPSRFSGSGSGTDFTLTISSLQPEDFATYYCQQSHEDPYTFGQGTKVEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNR
Targets
High affinity immunoglobulin epsilon receptor subunit alpha,High affinity immunoglobulin epsilon receptor subunit beta

5. Brands : Xolair Company : Genentech Inc Description : Xolair is a recombinant DNA-derived humanized IgG1τ monoclonal antibody that selectively binds to human immunoglobulin E (IgE). The antibody has a molecular weight of approximately 149 kiloDaltons. Xolair is produced by a Chinese hamster ovary cell suspension culture in a nutrient medium containing the antibiotic gentamicin. Gentamicin is not detectable in the final product Used For/Prescribed for : Xolair is used to treat moderate to severe asthma that is caused by allergies, and chronic idiopathic urticaria (a form of chronic hives) in adults and children who are at least 12 years old. Xolair is usually given after other asthma medications have been tried without successful treatment of symptoms. Formulation : It is formulated in a single use vial that is reconstituted with Sterile Water for Injection (SWFI), USP, and administered as a subcutaneous (SC) injection. Each mg vial of omalizumab also contains L-histidine (1.8 mg), L-histidine hydrochloride monohydrate (2.8 mg), polysorbate 20 (0.5 mg) and sucrose (145.5 mg) and is designed to deliver 150 mg of omalizumab in 1.2 mL after reconstitution with 1.4 mL SWFI, USP.

6. Form : sterile, white, preservative free, lyophilized powder Route of administration : subcutaneous injection Dosage : Administer Xolair 150 to 375 mg by subcutaneous injection every 2 or 4 weeks. Determine doses (mg) and dosing frequency by serum total IgE level (IU/mL), measured before the start of treatment, and body weight (kg) as if serum IgE is less than IU/ml, then !50 mg of drug is for people having Kg of body weight and similarl amount for kg of weight but for people having weight between Kg, dose is recommended as 300 mg. Contraindication : Severe hypersensitivity Side effects : wheezing, tightness in your chest, trouble breathing; hives or skin rash; feeling anxious or light-headed, fainting; warmth or tingling under your skin; or swelling of your face, lips, tongue, or throat. pain; headache, tired feeling; joint or muscle pain; dizziness; ear pain; hair loss; mild itching or skin rash; sore throat or cold symptoms; or redness, bruising, warmth, burning, stinging, itching, pain, or swelling of your skin where the injection was given.

7. General References # Karagiannis SN, Wang Q, East N, Burke F, Riffard S, Bracher MG, Thompson RG, Durham SR, Schwartz LB, Balkwill FR, Gould HJ: Activity of human monocytes in IgE antibody-dependent surveillance and killing of ovarian tumor cells. Eur J Immunol Apr;33(4): "Pubmed":

8. Refrence http://www.xolair.com/