{"ok":true,"data":{"subject":{"kind":"trial","nctId":"NCT01503632","title":"Assessing Compliance With Mercaptopurine Treatment in Younger Patients With Acute Lymphoblastic Leukemia in First Remission","sponsor":"Children's Oncology Group","phases":["PHASE3"],"status":"COMPLETED","indication":{"slug":"pediatric-all","name":"Childhood acute lymphoblastic leukemia"},"disease":"childhood acute lymphoblastic leukemia"},"rows":[{"n":1,"question":"Is the biology right?","flags":[{"id":"somatic_driver","label":"Somatic driver evidence","value":"no","detail":"None of PPAT has somatic-mutation evidence in childhood acute lymphoblastic leukemia","rule":"Open Targets has somatic-mutation evidence for the target in this cancer","source":{"label":"Open Targets: PPAT in childhood acute lymphoblastic leukemia","url":"https://platform.opentargets.org/evidence/ENSG00000128059/MONDO_0000870","date":"2026-11-11T18:37:37.315Z"},"context":[]},{"id":"human_genetic","label":"Human genetic evidence","value":"no","detail":"No germline or somatic evidence for PPAT in childhood acute lymphoblastic leukemia","rule":"Any germline or somatic human genetic evidence for the target in this cancer, counted apart from animal-model and literature evidence","source":{"label":"Open Targets: PPAT in childhood acute lymphoblastic leukemia","url":"https://platform.opentargets.org/evidence/ENSG00000128059/MONDO_0000870","date":"2026-11-11T18:37:37.315Z"},"context":[]},{"id":"pediatric_target","label":"Pediatric target","value":"no","detail":"Not on the FDA list","rule":"Target is on FDA's Pediatric Molecular Target List (relevant targets); membership alone neither requires nor waives a study","source":{"label":"FDA Pediatric Molecular Target List (Listed as February 2026 on the FDA Pediatric Oncology page; the file served is 9.7.22_the_relevant_molecular_target_list.xlsx, whose Summary of Changes sheet is headed 'SEPTEMBER 2022 UPDATE' (footnote date 2022-09-01))","url":"https://www.fda.gov/media/191157/download?attachment","date":"2026-11-11T07:05:03Z"},"context":[]},{"id":"haematologic","label":"Haematologic cancer","value":"yes","detail":"Haematologic","rule":"From the indication, or the registry conditions when no indication matches","source":{"label":"ClinicalTrials.gov NCT01503632","url":"https://clinicaltrials.gov/study/NCT01503632","date":"2026-11-11T18:37:37.315Z"},"context":[{"figure":"Likelihood of approval from phase 1: 7.5% haematologic vs 4.6% solid","dataset":"BIO / Informa / QLS 2021","years":"2011–2020","caveat":"Population-level, not a prediction."}]}],"facts":[{"label":"PPAT (via Mercaptopurine)","text":"Open Targets has no association between PPAT and childhood acute lymphoblastic leukemia.","source":{"label":"Open Targets: PPAT in childhood acute lymphoblastic leukemia","url":"https://platform.opentargets.org/evidence/ENSG00000128059/MONDO_0000870","date":"2026-11-11T18:37:37.315Z"}}],"pending":[{"what":"Normal-tissue expression in vital organs","source":"Human Protein Atlas (ticket 36)"},{"what":"Pan-essential in cell lines","source":"DepMap (ticket 36)"},{"what":"Approved drug on this target","source":"Drugs@FDA (ticket 30)"}]},{"n":2,"question":"Can the result be trusted?","flags":[{"id":"randomised","label":"Randomised","value":"yes","detail":"Randomised allocation","rule":"Registry allocation field","source":{"label":"ClinicalTrials.gov NCT01503632","url":"https://clinicaltrials.gov/study/NCT01503632","date":"2026-11-11T18:37:37.315Z"},"context":[]},{"id":"small_denominator","label":"Small denominator","value":"no","detail":"570 enrolled; each patient moves a rate by 100 ÷ 570 = 0.2 points","rule":"Enrolment under 30; the arithmetic is shown, not a benchmark","source":{"label":"ClinicalTrials.gov NCT01503632","url":"https://clinicaltrials.gov/study/NCT01503632","date":"2026-11-11T18:37:37.315Z"},"context":[]},{"id":"primary_os","label":"Primary endpoint is overall survival","value":"no","detail":"Proportion of patients with adherence rate greater than or equal to 95% to mercaptopurine as measured by MEMS®; Proportion of patients with adherence rate greater than or equal to 95% to mercaptopurine as measured by red cell TGN…","rule":"A registered primary outcome measure names overall survival","source":{"label":"ClinicalTrials.gov NCT01503632","url":"https://clinicaltrials.gov/study/NCT01503632","date":"2026-11-11T18:37:37.315Z"},"context":[{"figure":"Non-OS primary endpoint: odds ratio 2.79 for a positive phase 3","dataset":"Otsuka 2021, 400 phase 3 oncology trials","years":"to 2020","caveat":"Shown with the next figure: a surrogate is easier to hit, and often a weak guide to survival."},{"figure":"52% of surrogate-to-OS correlations are low","dataset":"Prasad 2015","years":"published to 2014","caveat":"Shown with the figure above."}]},{"id":"results_overdue","label":"Results overdue","value":"yes","detail":"Primary completion 2019-06-30, 88 months ago; no results posted","rule":"Primary completion (actual) more than 12 months ago and no results posted to the registry","source":{"label":"ClinicalTrials.gov NCT01503632","url":"https://clinicaltrials.gov/study/NCT01503632","date":"2026-11-11T18:37:37.315Z"},"context":[{"figure":"40.9% of applicable trials report results within a year","dataset":"Results-reporting studies summarised in spec §11","years":"all therapy areas","caveat":"All areas, not oncology only."}]}],"facts":[],"pending":[{"what":"Treated and evaluable counts, assessor, confirmed response, follow-up and data cutoff","source":"Readout extraction (ticket 32)"},{"what":"Primary endpoint changed between registry versions","source":"Registry versions in the store (ticket 32)"}]},{"n":3,"question":"What must it beat?","flags":[],"facts":[],"pending":[{"what":"Control-arm result and approved therapies for the same segment, with label links","source":"Drugs@FDA, FDA labels and readouts (tickets 30, 32)"}]},{"n":4,"question":"Too crowded, or too late?","flags":[],"facts":[{"label":"Stopped on this target","text":"69 terminated, withdrawn or suspended trials of drugs against PPAT; 7 give no reason. Reasons are quoted as the registry gives them on the target page.","source":{"label":"PPAT: what already stopped","url":"/target/ENSG00000128059#stopped","date":"2026-11-11T18:37:37.327Z"}}],"pending":[{"what":"Programs on the target by phase and months behind the leader","source":"Programs and Drugs@FDA (ticket 33)"}]},{"n":5,"question":"Can it be approved, and stay approved?","flags":[{"id":"single_country","label":"Single-country","value":"no","detail":"102 sites in 2 countries; 100 in the United States (98%)","rule":"All listed sites are in one country; the share of US sites is shown","source":{"label":"ClinicalTrials.gov NCT01503632","url":"https://clinicaltrials.gov/study/NCT01503632?tab=locations","date":"2026-11-11T18:37:37.315Z"},"context":[]},{"id":"eu_pip","label":"EU paediatric investigation plan","value":"no","detail":"No EMA paediatric investigation plan decision names Mercaptopurine","rule":"An EMA PIP decision (agreement, modification or waiver) lists the drug as its active substance, exact name","source":{"label":"EMA data download (dated snapshot)","url":"https://www.ema.europa.eu/en/documents/report/medicines-output-paediatric_investigation_plans-output-json-report_en.json","date":"2026-11-11T09:12:26Z"},"context":[]},{"id":"eu_orphan","label":"EU orphan designation","value":"yes","detail":"EU/3/09/628 expired 30 Apr 2009: Treatment of acute lymphoblastic leukaemia; EU/3/07/496 positive 22 Oct 2007: Treatment of acute lymphoblastic leukaemia","rule":"An EU orphan designation lists the drug as its active substance (exact name) or belongs to a medicine that does; withdrawn and expired designations are listed with their status","source":{"label":"EMA data download (dated snapshot)","url":"https://www.ema.europa.eu/en/documents/report/medicines-output-orphan_designations-json-report_en.json","date":"2026-11-11T09:12:26Z"},"context":[]},{"id":"eu_authorised","label":"Authorised in the EU","value":"yes","detail":"Xaluprine (previously Mercaptopurine Nova Laboratories): authorised since 9 Mar 2012; Loulla: application withdrawn, orphan medicine","rule":"An EMA medicine record lists the drug as its active substance or INN, exact name; national-only authorisations are not in this file","source":{"label":"EMA data download (dated snapshot)","url":"https://www.ema.europa.eu/en/documents/report/medicines-output-medicines_json-report_en.json","date":"2026-11-11T09:12:26Z"},"context":[]},{"id":"fda_orphan","label":"FDA orphan designation","value":"not published","detail":"FDA's orphan designation database turns away automated requests, so this app does not read it; search it by hand at the link","rule":"Would be: an FDA orphan designation names the drug","source":{"label":"FDA orphan designations search","url":"https://www.accessdata.fda.gov/scripts/opdlisting/oopd/","date":""},"context":[]},{"id":"fda_ped_approval","label":"FDA pediatric oncology approval","value":"yes","detail":"Mercaptopurine [Purinethol tablet] &, 11 Sept 1953: Treatment of adult and pediatric patients with acute lymphoblastic leukemia (ALL) as part of a combination chemotherapy maintenance regimen","rule":"FDA's Pediatric Oncology Drug Approvals table names the drug","source":{"label":"FDA Pediatric Oncology Drug Approvals (content current as of 2026-03-03)","url":"https://www.fda.gov/about-fda/oncology-center-excellence/pediatric-oncology-drug-approvals","date":"2026-11-11T18:37:37.340Z"},"context":[]},{"id":"studies_under_18","label":"Registered studies open to children","value":"yes","detail":"206 interventional studies of Mercaptopurine include patients under 18; 44 are recruiting, not yet recruiting or active","rule":"The registry's age group includes Child (birth to 17 years), which also counts studies that set no minimum age","source":{"label":"ClinicalTrials.gov search","url":"https://clinicaltrials.gov/search?intr=%22Mercaptopurine%22&aggFilters=ages%3Achild%2CstudyType%3Aint","date":"2026-11-11T18:37:37.344Z"},"context":[]}],"facts":[{"label":"Caveat","text":"Site counts are not patients per country, and trials registered only outside ClinicalTrials.gov are not covered. Where the sites are is a fact about the record, not a judgement of its quality."},{"label":"Rare pediatric disease voucher","text":"FDA, content current as of 29 Apr 2026: “As of February 3, 2026, enactment of the Consolidated Appropriations Act, 2026, the rare pediatric disease PRV program will sunset after September 30, 2029. FDA may not award any PRVs under this program after September 30, 2029.” Voucher sale prices are not shown here; they appear only as company-reported news.","source":{"label":"FDA: Rare Pediatric Disease Designation and Priority Review Voucher Programs","url":"https://www.fda.gov/industry/medical-products-rare-diseases-and-conditions/rare-pediatric-disease-designation-and-priority-review-voucher-programs","date":"2026-11-11"}}],"pending":[{"what":"Precedent approvals for target, modality and endpoint; accelerated-approval status","source":"Drugs@FDA and FDA accelerated-approval tables (ticket 30)"}]},{"n":6,"question":"Can the sponsor finish?","flags":[],"facts":[{"label":"Sponsor","text":"Children's Oncology Group (academic or other)","source":{"label":"ClinicalTrials.gov NCT01503632","url":"https://clinicaltrials.gov/study/NCT01503632","date":"2026-11-11T18:37:37.315Z"}},{"label":"principal investigator","text":"Smita Bhatia, Children's Oncology Group","source":{"label":"Person page","url":"/person/Smita%20Bhatia?ind=pediatric-all","date":"2026-11-11T18:37:37.315Z"}}],"pending":[{"what":"Filed cash, quarterly spend and the runway arithmetic","source":"SEC XBRL company facts (ticket 37)"},{"what":"Sponsor's completed vs stopped oncology trials and results-reporting record","source":"Registry, by company (ticket 37)"}]}],"limits":"Public records cannot show: sales forecasts; a probability of success for this asset; full deal terms and net prices; FDA designations and action dates before approval (shown only as company-reported); clinical holds unless the company disclosed them; manufacturing; patents on unapproved drugs; whether preclinical findings have been replicated.","sources":[{"label":"ClinicalTrials.gov NCT01503632","url":"https://clinicaltrials.gov/study/NCT01503632","date":"2026-11-11T18:37:37.315Z"},{"label":"Open Targets Platform","url":"https://platform.opentargets.org","date":"2026-11-11T18:37:37.315Z"},{"label":"FDA Pediatric Molecular Target List (Listed as February 2026 on the FDA Pediatric Oncology page; the file served is 9.7.22_the_relevant_molecular_target_list.xlsx, whose Summary of Changes sheet is headed 'SEPTEMBER 2022 UPDATE' (footnote date 2022-09-01))","url":"https://www.fda.gov/media/191157/download?attachment","date":"2026-11-11T07:05:03Z"}]},"source":"ClinicalTrials.gov + Open Targets","fetchedAt":"2026-11-11T18:37:37.306Z"}