Research Data Analytics at Thomas Jefferson University Jack London, PhD Thomas Jefferson University Sidney Kimmel Cancer Center Philadelphia PA USA 2015 i2b2 European Academic User Group meeting October 6, 2015
2 Disclaimer In addition to my faculty position at Thomas Jefferson University in Philadelphia, I am a consultant for TriNetX Corporation.
3 Thomas Jefferson University and the Sidney Kimmel Cancer Center (SKCC), Philadelphia Located between New York City and Washington DC Jefferson Medical College (JMC) was founded in JMC is the second largest private medical school in the U.S. The NCI-designated SKCC has ~ 400 physicians and scientists dedicated to discovery and development of novel approaches for cancer treatment.
4 SKCC’s IT infrastructure GE Centricity inpatient EMR Allscripts outpatient (ambulatory care) EHR EPIC inpatient and outpatient Cerner A/P lab system EPIC Beaker OpenSpecimen research biobank management TIES clinical text extraction i2b2 research data mart TriNetX data analytics network
5 Current Jefferson Data Resource Landscape TJUH CLINICAL DATA WAREHOUSE DEMOGRAPHICS (gender, race, age, vital status, ethnicity) DIAGNOSES (ICD9) PROCEDURES (ICD9) CLINICAL LABS (LOINC) MEDICATIONS TJUH CLINICAL DATA WAREHOUSE DEMOGRAPHICS (gender, race, age, vital status, ethnicity) DIAGNOSES (ICD9) PROCEDURES (ICD9) CLINICAL LABS (LOINC) MEDICATIONS i2b2 RESEARCH DATA MART IMPAC METRIQ cancer registry site, stage, histology, treatment, survival (ICD-O-3 ) IMPAC METRIQ cancer registry site, stage, histology, treatment, survival (ICD-O-3 ) CERNER A/P “omic” data CERNER A/P “omic” data FORTE ONCORE clinical trial data FORTE ONCORE clinical trial data OPEN SPECIMEN biospecimen annotation (SNOMED) OPEN SPECIMEN biospecimen annotation (SNOMED)
6 Jefferson’s i2b2 Research Data Mart Built on “informatics for integrating biology and the bedside” (i2b2) version RDM data are de-identified. Re-identification possible via an honest broker, who has access to a re-identification application. Currently > 45 million observations on > 450,000 patients. Data refreshed weekly.
7 Patient data obtained from TJUH EMR DEMOGRAPHICS Age Ethnicity Gender Race Vital Status (alive/dead) DIAGNOSES Disease systems --> diseases (organized by ICD9 coding) CLINICAL LAB RESULTS Chemistry Coagulation Hematology MEDICATIONS Anti-neoplastic INPATIENT PROCEDURES Diagnostic and Treatment procedures (organized by ICD9 coding)
8 Patient mutation data obtained from Pathology Molecular Diagnostic Testing (both outsourced and in-house) ALKrearrangement BRAFc.1782T>Gp.D594E BRAFc.1801A>Gp.K601E BRAFc.1799T>Ap.V600E EGFRDeletion in exon 19 EGFRInsertion in exon 20 EGFRc.2236G>Ap.E746K EGFRc.2236_2250del15 p.E746_A750delELREA EGFRc.2156G>Cp.G719A EGFRc.2155G>Tp.G719C EGFRc.2155G>Ap.G719S EGFRc.2573T>Gp.L858R EGFRc.2582T>Ap.L861Q EGFRc.2303G>Tp.S768I JAK2c.1849G>Tp.V617F JAK3c.2164G>Ap.V722I KRASc.35G>Cp.G12A KRASc.34G>Tp.G12C KRASc.35G>Ap.G12D KRASc.34G>Cp.G12R KRASc.34G>Ap.G12S KRASc.35G>Tp.G12V KRASc.38G>Ap.G13D NRASc.183A>Tp.Q61H NRASc.181C>Ap.Q61K NRASc.182A>Tp.Q61L NRASc.182A>Gp.Q61R PIK3CAc.1633G>Ap.E545K PIK3CAc.3140A>Tp.H1047L PIK3CAc.3140A>Gp.H1047R PTENc.754G>Tp.D252Y PTENc.59G>Ap.G20E RETrearrangement ROS1rearrangement SMAD4c.1157G>Ap.G386D TP53c.843C>Ap.D281E TP53c.811G>Tp.E271* TP53c.857A>Cp.E286A TP53c.400T>Cp.F134L TP53c.734G>Ap.G245D TP53c.388C>Gp.L130V TP53c.524G>Ap.R175H TP53c.817C>Tp.R273C TP53c.818G>Ap.R273H TP53c.318C>Gp.S106R TP53c.659A>Gp.Y220C TP53c.707A>Gp.Y236C
9 Molecular Diagnostics ontology
10 Specimen annotation from campus biobanks Anatomic origin (SNOMED) Class (tissue, fluid) Type (frozen, FFPE) Pathology (normal, malignant, diseased) Slide images Eight biobanks, including the TJUH paraffin block archive of ~400,000 cases since 1990.
11 Specimen annotation management TJUH clinical paraffin block archive Pathology Department research tissue bank Brain tumor bank (J. Evans, PI) Pancreatic tumor bank (C. Yeo, PI) Breast tumor bank (J. Palazzo, PI) Thyroid tumor bank (E. Pribitkin, PI) Brain tumor bank (D. Andrews, PI) Liver tumor bank (V. Navarro, PI) JJJjjjj Jefferson integrated Research Specimen management (OpenSpecimen) > 230,000 patients > 650,000 specimens > 100,000 patients via i2b2 RDM Cancer patients having comprehensive annotation from the Tumor Registry and banked specimens
12 Biospecimen ontology
13 Pathology images are available via i2b2 query tool
14 Patient data from Jefferson Tumor Registry Primary Cancer Diagnosis Age at diagnosis/date of diagnosis Survival (months) from diagnosis Tumor histology and behavior Stage (AJCC/TNM, clinical and pathological) Grade Recurrence local, distant Treatment chemotherapy, radiation, surgery, transplant, palliative Disease-specific factors ex: (prostate --> Gleason score) Over 100,000 cases since 1990.
15 Tumor Registry ontology
16 Typical SKCC Investigator Queries Example #1: Form cohort of “triple negative” (estrogen receptor, progesterone receptor, and her2 negative), African American patients, having matched normal and malignant frozen tissue specimens. Example #2: Form cohort of patients with a primary diagnosis of papillary thyroid cancer, and expressing a V600E BRAF mutation.
17 Additional data on selected cohort can be retieved
18 Example data summaries from the i2b2 RDM CLINICAL DIAGNOSES OF TJUH PATIENTS WITH THYROID SPECIMENS
19 Jefferson – TriNetX project In the fall of 2014, the SKCC informatics group entered into a collaboration with a Cambridge, Massachusetts based start-up company, TriNetX, Inc. TriNetX facilitates collaboration between pharmaceutical companies and academic healthcare providers through the creation of a global, federated data network that connects academic and industry clinical researchers in real-time to the patient populations they are attempting to study. The TriNetX applications accesses a site’s i2b2 database, and displays aggregate query results in an advanced, flexible manner.
20 TriNetX application offers an alternative query tool with enhanced data visualization Google-like query interface Graphic result display
21 TriNetX application offers an alternative query toolwith enhanced data visualization Interactive display capability
22 Cohort definition via i2b2 can be used to predict accrual for proposed clinical trials
23 Problem confronting clinical trials research: studies that fail to accrue An Institute of Medicine report 1 on cancer cooperative group trials found that 40% were never completed because of failure to achieve minimum accrual goals: “The ultimate inefficiency is a clinical trial that is never completed because of insufficient patient accrual, and this happens far too often.” These non-accruing trials are often kept open for many months before closure, consuming personnel resources in their setup and operation at a significant cost to institutions, without providing any return in definitive research findings. Furthermore, while many of these trials register zero patients, others accrue some patients, resulting in thousands of patients nationwide who are recruited to unproductive research studies Nass SJ, Moses HL, Mendelsohn J, editors. Committee on Cancer Clinical Trials and the NCI Cooperative Group Program Board on Health Care Services; A National Cancer Clinical Trials System for the 21st Century: Reinvigorating the NCI Cooperative Group Program. Washington DC: National Academies Press, Cheng, S., M. Dietrich, S. Finnigan, A. Sandler, J. Crites, L. Ferranti, A. Wu, and D. Dilts. A sense of urgency: Evaluating the link between clinical trial development time and the accrual performance of CTEP-sponsored studies ASCO Annual Meeting Proceedings. J of Clinical Oncology, 2009.
24 Study design The overall objective of this study was to evaluate whether accrual for proposed cancer clinical trials could be predicted by performing cohort queries that are based on the trial’s eligibility criteria on recent patient data in Jefferson’s i2b2 research data mart (RDM), created from de-identified integrated hospital clinical, tumor registry, and specimen data. To determine the ability of the i2b2 RDM to predict accrual for prospective trials, we retrospectively used the RDM to obtain patient populations for two years prior to recent trials and compared these cohort sizes to the actual accrual observed after the trial was opened. We considered 90 interventional cancer trials opened at KCC in the years 2008, 2009, and 2010, since these have been open for at least two years and their accrual performance could be evaluated.
25 Study methodology o We constructed RDM cohort queries corresponding to the trial eligibility criteria for the two years prior to each trial’s opening (e.g., we considered TJUH patient populations from 2007 and 2008 for trials opened in 2009). o We computed an annual cohort size by averaging the 2-year totals. o We then compared our RDM annual cohort size for the 2 years preceding a trial’s opening to the annual target goal for that trial and the trial’s actual accrual performance. Since we initially assumed that 50% of eligible participants would enroll in a study, the RDM cohort would have to be at least twice the accrual goal for a prediction of “successful” trial accrual. We defined a trial’s actual accrual performance as “successful” if it accrued at least 80% of its target enrollment.
26 Results To assess the predictive precision of our proposed project, a contingency table was produced for the 90 trials analyzed. A trial was denoted as potentially successful in meeting its annual target accrual (“PREDICTED SUCCESS” row) if the retrospective i2b2 cohort analysis indicated sufficient patients for the trial. A trial was denoted as actually successful in meeting its annual target accrual if the trial satisfactorily approached the protocol’s stated target annual accrual (“ACTUAL SUCCESS” column). Contingency table comparing i2b2 accrual predictions with actual accrual success, assuming only 50% of potential participants identified by i2b2 are enrolled. Our methodology has (= 31/32 trials) accuracy (95% C.I. (0.908, 1)) for predicting successful accrual (i.e. specificity) and 0.397(= 23/58 trials) accuracy (95% C.I. (0.271, 0.522)) for predicting failed accrual (i.e. sensitivity). The positive predictive value, or precision rate, is (= 23/24 trials) (95% C.I. (0.878, 1)).
27 Results Our results show that the methodology, while having an excellent positive predictive value (95.8%, predicted failure for 23 of the 24 trials that actually failed ), is not good at predicting failed accrual (39.7%, 23/58 trials). In other words: if the methodology predicts "failed accrual," then we should trust this prediction and should not proceed to open the trial with its current eligibility criteria; however, a prediction of accrual success using this method is no guarantee that target goals will be met.
28 How can this methodology be useful? A benefit of analyzing potential trial accrual during the protocol design phase is that it offers an opportunity to “tweak” eligibility rules when insufficient patient cohorts are found. A change in participation criteria that does not impact significantly on the scientific objectives of the trial may provide a sufficiently large potential patient pool. Not opening the 23 trials that were correctly predicted to fail to accrue over the 3 years studied would have prevented the waste of about $200,000 in trial startup costs alone, and the participation of 57 patients in studies which did not contribute to advancing science or clinical care.
Selected areas of research using RDM: Hallgeir Rui, MD, PhD: Molecular Cancer Epidemiology, cancer pharmacogenetics, individualised cancer risk assessment and prognostication. Raphael E. Bonita, MD: Jefferson Heart Institute, correlation of troponin levels and heart failure in transplant patients. Hushan Yang, PhD: Molecular Cancer Epidemiology. Jordan Winter, MD: Surgery, whipple procedure survival study. Scott Waldman, MD, PhD: Pharmacology and experimental therapeutics. Ron Myers, PhD: Gene environmental risk assessmant. Stephen Peiper, MD: Biomarker discovery using Next Generation Sequencing.