{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Myeloproliferative+Neoplasm&page=3", "query": { "condition": "Refractory Myeloproliferative Neoplasm", "page": 3 }, "page_size": 10 }, "pagination": { "page": 3, "page_size": 10, "total_count": 609, "total_pages": 61, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Myeloproliferative+Neoplasm&page=4&page_size=10", "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Myeloproliferative+Neoplasm&page=2&page_size=10" }, "source": "remote", "last_synced_at": "2026-10-20T14:33:20.935Z", "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.", "notes": [ "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.", "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.", "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees." ], "trials": [ { "nct_id": "NCT04250051", "title": "Ivosidenib and Combination Chemotherapy for the Treatment of IDH1 Mutant Relapsed or Refractory Acute Myeloid Leukemia", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Recurrent Acute Myeloid Leukemia", "Recurrent Myelodysplastic Syndrome", "Recurrent Myeloproliferative Neoplasm", "Refractory Acute Myeloid Leukemia", "Refractory Myelodysplastic Syndrome", "Newly Diagnosed Acute Myeloid Leukemia (AML)", "IDH1 Mutation Myeloid Neoplasms", "Acute Myeloid Leukemia (AML)" ], "interventions": [ { "name": "Cytarabine", "type": "DRUG" }, { "name": "Filgrastim", "type": "BIOLOGICAL" }, { "name": "Fludarabine", "type": "DRUG" }, { "name": "Fludarabine Phosphate", "type": "DRUG" }, { "name": "Ivosidenib", "type": "DRUG" }, { "name": "Idarubicin", "type": "DRUG" } ], "intervention_types": [ "DRUG", "BIOLOGICAL" ], "sponsor": "Northwestern University", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 2, "start_date": "2020-12-21", "completion_date": "2022-12-20", "has_results": false, "last_update_posted_date": "2026-06-01", "last_synced_at": "2026-10-20T14:33:20.935Z", "location_count": 1, "location_summary": "Chicago, Illinois", "locations": [ { "city": "Chicago", "state": "Illinois" } ], "official_url": "https://clinicaltrials.gov/study/NCT04250051" }, { "nct_id": "NCT00719888", "title": "Umbilical Cord Blood Transplant, Cyclophosphamide, Fludarabine, and Total-Body Irradiation in Treating Patients With Hematologic Disease", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Acute Biphenotypic Leukemia", "Acute Lymphoblastic Leukemia", "Acute Myeloid Leukemia", "Burkitt Lymphoma", "Chronic Lymphocytic Leukemia", "Chronic Myelogenous Leukemia, BCR-ABL1 Positive", "Chronic Phase Chronic Myelogenous Leukemia, BCR-ABL1 Positive", "Follicular Lymphoma", "Lymphoblastic Lymphoma", "Lymphoplasmacytic Lymphoma", "Mantle Cell Lymphoma", "Marginal Zone Lymphoma", "Myelodysplastic Syndrome", "Myelofibrosis", "Non-Hodgkin Lymphoma", "Plasma Cell Myeloma", "Prolymphocytic Leukemia", "Refractory Anemia", "Small Lymphocytic Lymphoma" ], "interventions": [ { "name": "Cyclophosphamide", "type": "DRUG" }, { "name": "Cyclosporine", "type": "DRUG" }, { "name": "Double-Unit Umbilical Cord Blood Transplantation", "type": "PROCEDURE" }, { "name": "Fludarabine", "type": "DRUG" }, { "name": "Laboratory Biomarker Analysis", "type": "OTHER" }, { "name": "Mycophenolate Mofetil", "type": "DRUG" }, { "name": "Total-Body Irradiation", "type": "RADIATION" }, { "name": "Umbilical Cord Blood Transplantation", "type": "PROCEDURE" }, { "name": "Thiotepa", "type": "DRUG" } ], "intervention_types": [ "DRUG", "PROCEDURE", "OTHER", "RADIATION" ], "sponsor": "Fred Hutchinson Cancer Center", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "6 Months", "maximum_age": "65 Years", "sex": "ALL", "summary": "6 Months to 65 Years" }, "enrollment_count": 135, "start_date": "2005-11-18", "completion_date": "2024-12-19", "has_results": true, "last_update_posted_date": "2025-03-07", "last_synced_at": "2026-10-20T14:33:20.935Z", "location_count": 3, "location_summary": "Aurora, Colorado • Seattle, Washington", "locations": [ { "city": "Aurora", "state": "Colorado" }, { "city": "Seattle", "state": "Washington" }, { "city": "Seattle", "state": "Washington" } ], "official_url": "https://clinicaltrials.gov/study/NCT00719888" }, { "nct_id": "NCT00795769", "title": "Ondansetron in Preventing Nausea and Vomiting in Patients Undergoing Stem Cell Transplant", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Accelerated Phase Chronic Myelogenous Leukemia", "Adult Acute Lymphoblastic Leukemia in Remission", "Adult Acute Myeloid Leukemia in Remission", "Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities", "Adult Acute Myeloid Leukemia With Inv(16)(p13;q22)", "Adult Acute Myeloid Leukemia With t(15;17)(q22;q12)", "Adult Acute Myeloid Leukemia With t(16;16)(p13;q22)", "Adult Acute Myeloid Leukemia With t(8;21)(q22;q22)", "Atypical Chronic Myeloid Leukemia, BCR-ABL Negative", "Blastic Phase Chronic Myelogenous Leukemia", "Chronic Eosinophilic Leukemia", "Chronic Myelomonocytic Leukemia", "Chronic Neutrophilic Leukemia", "Chronic Phase Chronic Myelogenous Leukemia", "de Novo Myelodysplastic Syndromes", "Disseminated Neuroblastoma", "Extranodal Marginal Zone B-cell Lymphoma of Mucosa-associated Lymphoid Tissue", "Myelodysplastic/Myeloproliferative Neoplasm, Unclassifiable", "Nodal Marginal Zone B-cell Lymphoma", "Noncontiguous Stage II Adult Burkitt Lymphoma", "Noncontiguous Stage II Adult Diffuse Large Cell Lymphoma", "Noncontiguous Stage II Adult Diffuse Mixed Cell Lymphoma", "Noncontiguous Stage II Adult Diffuse Small Cleaved Cell Lymphoma", "Noncontiguous Stage II Adult Immunoblastic Large Cell Lymphoma", "Noncontiguous Stage II Adult Lymphoblastic Lymphoma", "Noncontiguous Stage II Grade 1 Follicular Lymphoma", "Noncontiguous Stage II Grade 2 Follicular Lymphoma", "Noncontiguous Stage II Grade 3 Follicular Lymphoma", "Noncontiguous Stage II Mantle Cell Lymphoma", "Noncontiguous Stage II Marginal Zone Lymphoma", "Noncontiguous Stage II Small Lymphocytic Lymphoma", "Poor Prognosis Metastatic Gestational Trophoblastic Tumor", "Previously Treated Myelodysplastic Syndromes", "Primary Myelofibrosis", "Recurrent Adult Acute Lymphoblastic Leukemia", "Recurrent Adult Acute Myeloid Leukemia", "Recurrent Adult Burkitt Lymphoma", "Recurrent Adult Diffuse Large Cell Lymphoma", "Recurrent Adult Diffuse Mixed Cell Lymphoma", "Recurrent Adult Diffuse Small Cleaved Cell Lymphoma", "Recurrent Adult Hodgkin Lymphoma", "Recurrent Adult Immunoblastic Large Cell Lymphoma", "Recurrent Adult Lymphoblastic Lymphoma", "Recurrent Childhood Large Cell Lymphoma", "Recurrent Childhood Lymphoblastic Lymphoma", "Recurrent Childhood Small Noncleaved Cell Lymphoma", "Recurrent Cutaneous T-cell Non-Hodgkin Lymphoma", "Recurrent Grade 1 Follicular Lymphoma", "Recurrent Grade 2 Follicular Lymphoma", "Recurrent Grade 3 Follicular Lymphoma", "Recurrent Malignant Testicular Germ Cell Tumor", "Recurrent Mantle Cell Lymphoma", "Recurrent Marginal Zone Lymphoma", "Recurrent Mycosis Fungoides/Sezary Syndrome", "Recurrent Neuroblastoma", "Recurrent Ovarian Epithelial Cancer", "Recurrent Ovarian Germ Cell Tumor", "Recurrent Small Lymphocytic Lymphoma", "Recurrent/Refractory Childhood Hodgkin Lymphoma", "Refractory Chronic Lymphocytic Leukemia", "Refractory Hairy Cell Leukemia", "Relapsing Chronic Myelogenous Leukemia", "Secondary Acute Myeloid Leukemia", "Secondary Myelodysplastic Syndromes", "Splenic Marginal Zone Lymphoma", "Stage I Multiple Myeloma", "Stage II Multiple Myeloma", "Stage II Ovarian Epithelial Cancer", "Stage III Adult Burkitt Lymphoma", "Stage III Adult Diffuse Large Cell Lymphoma", "Stage III Adult Diffuse Mixed Cell Lymphoma", "Stage III Adult Diffuse Small Cleaved Cell Lymphoma", "Stage III Adult Hodgkin Lymphoma", "Stage III Adult Immunoblastic Large Cell Lymphoma", "Stage III Adult Lymphoblastic Lymphoma", "Stage III Chronic Lymphocytic Leukemia", "Stage III Grade 1 Follicular Lymphoma", "Stage III Grade 2 Follicular Lymphoma", "Stage III Grade 3 Follicular Lymphoma", "Stage III Malignant Testicular Germ Cell Tumor", "Stage III Mantle Cell Lymphoma", "Stage III Marginal Zone Lymphoma", "Stage III Multiple Myeloma", "Stage III Ovarian Epithelial Cancer", "Stage III Small Lymphocytic Lymphoma", "Stage IIIA Breast Cancer", "Stage IIIB Breast Cancer", "Stage IIIC Breast Cancer", "Stage IV Adult Burkitt Lymphoma", "Stage IV Adult Diffuse Large Cell Lymphoma", "Stage IV Adult Diffuse Mixed Cell Lymphoma", "Stage IV Adult Diffuse Small Cleaved Cell Lymphoma", "Stage IV Adult Hodgkin Lymphoma", "Stage IV Adult Immunoblastic Large Cell Lymphoma", "Stage IV Adult Lymphoblastic Lymphoma", "Stage IV Breast Cancer", "Stage IV Chronic Lymphocytic Leukemia", "Stage IV Grade 1 Follicular Lymphoma", "Stage IV Grade 2 Follicular Lymphoma", "Stage IV Grade 3 Follicular Lymphoma", "Stage IV Mantle Cell Lymphoma", "Stage IV Marginal Zone Lymphoma", "Stage IV Ovarian Epithelial Cancer", "Stage IV Small Lymphocytic Lymphoma" ], "interventions": [ { "name": "ondansetron", "type": "DRUG" }, { "name": "survey administration", "type": "OTHER" }, { "name": "management of therapy complications", "type": "PROCEDURE" } ], "intervention_types": [ "DRUG", "OTHER", "PROCEDURE" ], "sponsor": "Fred Hutchinson Cancer Center", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "21 Years", "maximum_age": null, "sex": "ALL", "summary": "21 Years and older" }, "enrollment_count": 49, "start_date": "2008-08-08", "completion_date": "2009-06-10", "has_results": true, "last_update_posted_date": "2017-05-23", "last_synced_at": "2026-10-20T14:33:20.935Z", "location_count": 1, "location_summary": "Seattle, Washington", "locations": [ { "city": "Seattle", "state": "Washington" } ], "official_url": "https://clinicaltrials.gov/study/NCT00795769" }, { "nct_id": "NCT07250646", "title": "A Study of Rebecsinib for Patients With Relapsed/Refractory Secondary Acute Myeloid Leukemia or High Risk Myelofibrosis", "overall_status": "RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Secondary AML", "Myelofibrosis" ], "interventions": [ { "name": "rebecsinib", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Aspera Biomedicines, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 28, "start_date": "2026-05-21", "completion_date": "2028-04", "has_results": false, "last_update_posted_date": "2026-07-20", "last_synced_at": "2026-10-20T14:33:20.935Z", "location_count": 3, "location_summary": "Duarte, California • Sacramento, California • San Diego, California", "locations": [ { "city": "Duarte", "state": "California" }, { "city": "Sacramento", "state": "California" }, { "city": "San Diego", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT07250646" }, { "nct_id": "NCT00003805", "title": "Prevention of Infection in Patients With Hematologic Cancer and Persistent Fever Caused by a Low White Blood Cell Count", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Bone Marrow Suppression", "Fever, Sweats, and Hot Flashes", "Infection", "Leukemia", "Lymphoma", "Multiple Myeloma and Plasma Cell Neoplasm", "Myelodysplastic Syndromes", "Unspecified Adult Solid Tumor, Protocol Specific", "Unspecified Childhood Solid Tumor, Protocol Specific" ], "interventions": [ { "name": "piperacillin sodium", "type": "DRUG" }, { "name": "piperacillin-tazobactam", "type": "DRUG" }, { "name": "tazobactam sodium", "type": "DRUG" }, { "name": "vancomycin", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "European Organisation for Research and Treatment of Cancer - EORTC", "sponsor_class": "NETWORK", "healthy_volunteers": false, "eligibility": { "minimum_age": "2 Years", "maximum_age": null, "sex": "ALL", "summary": "2 Years and older" }, "enrollment_count": 859, "start_date": "1997-11", "completion_date": null, "has_results": false, "last_update_posted_date": "2012-09-24", "last_synced_at": "2026-10-20T14:33:20.935Z", "location_count": 2, "location_summary": "Baltimore, Maryland • Boston, Massachusetts", "locations": [ { "city": "Baltimore", "state": "Maryland" }, { "city": "Boston", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT00003805" }, { "nct_id": "NCT00004230", "title": "Captopril in Treating Patients Undergoing Bone Marrow or Stem Cell Transplantation", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Cancer" ], "interventions": [ { "name": "captopril", "type": "DRUG" }, { "name": "cyclophosphamide", "type": "DRUG" }, { "name": "autologous bone marrow transplantation", "type": "PROCEDURE" }, { "name": "peripheral blood stem cell transplantation", "type": "PROCEDURE" }, { "name": "radiation therapy", "type": "RADIATION" } ], "intervention_types": [ "DRUG", "PROCEDURE", "RADIATION" ], "sponsor": "Northwestern University", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": null, "maximum_age": null, "sex": "ALL", "summary": "Not listed" }, "enrollment_count": 35, "start_date": "1999-10", "completion_date": "2002-03", "has_results": false, "last_update_posted_date": "2012-06-06", "last_synced_at": "2026-10-20T14:33:20.935Z", "location_count": 1, "location_summary": "Chicago, Illinois", "locations": [ { "city": "Chicago", "state": "Illinois" } ], "official_url": "https://clinicaltrials.gov/study/NCT00004230" }, { "nct_id": "NCT00098826", "title": "SB-715992 in Treating Patients With Acute Leukemia, Chronic Myelogenous Leukemia, or Advanced Myelodysplastic Syndromes", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Acute Undifferentiated Leukemia", "Adult Acute Megakaryoblastic Leukemia (M7)", "Adult Acute Minimally Differentiated Myeloid Leukemia (M0)", "Adult Acute Monoblastic Leukemia (M5a)", "Adult Acute Monocytic Leukemia (M5b)", "Adult Acute Myeloblastic Leukemia With Maturation (M2)", "Adult Acute Myeloblastic Leukemia Without Maturation (M1)", "Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities", "Adult Acute Myeloid Leukemia With Inv(16)(p13;q22)", "Adult Acute Myeloid Leukemia With t(15;17)(q22;q12)", "Adult Acute Myeloid Leukemia With t(16;16)(p13;q22)", "Adult Acute Myeloid Leukemia With t(8;21)(q22;q22)", "Adult Acute Myelomonocytic Leukemia (M4)", "Adult Acute Promyelocytic Leukemia (M3)", "Adult Erythroleukemia (M6a)", "Adult Pure Erythroid Leukemia (M6b)", "Blastic Phase Chronic Myelogenous Leukemia", "de Novo Myelodysplastic Syndromes", "Previously Treated Myelodysplastic Syndromes", "Recurrent Adult Acute Lymphoblastic Leukemia", "Recurrent Adult Acute Myeloid Leukemia", "Refractory Anemia With Excess Blasts", "Refractory Anemia With Excess Blasts in Transformation", "Relapsing Chronic Myelogenous Leukemia", "Secondary Acute Myeloid Leukemia", "Secondary Myelodysplastic Syndromes", "Untreated Adult Acute Myeloid Leukemia" ], "interventions": [ { "name": "ispinesib", "type": "DRUG" }, { "name": "laboratory biomarker analysis", "type": "OTHER" }, { "name": "pharmacological study", "type": "OTHER" } ], "intervention_types": [ "DRUG", "OTHER" ], "sponsor": "National Cancer Institute (NCI)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 40, "start_date": "2004-12", "completion_date": null, "has_results": false, "last_update_posted_date": "2013-01-11", "last_synced_at": "2026-10-20T14:33:20.935Z", "location_count": 1, "location_summary": "Cleveland, Ohio", "locations": [ { "city": "Cleveland", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT00098826" }, { "nct_id": "NCT00171223", "title": "An Extension Study to Determine the Efficacy and Safety of STI571 in Participants With Chronic Myeloid Leukemia Who Are Refractory to or Intolerant of Interferon-Alpha", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Leukemia, Myelogenous, Chronic, BCR-ABL Positive" ], "interventions": [ { "name": "STI571", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Novartis Pharmaceuticals", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 532, "start_date": "1999-12-06", "completion_date": "2013-11-29", "has_results": true, "last_update_posted_date": "2021-07-22", "last_synced_at": "2026-10-20T14:33:20.935Z", "location_count": 11, "location_summary": "Los Angeles, California • Tampa, Florida • Chicago, Illinois + 8 more", "locations": [ { "city": "Los Angeles", "state": "California" }, { "city": "Tampa", "state": "Florida" }, { "city": "Chicago", "state": "Illinois" }, { "city": "Baltimore", "state": "Maryland" }, { "city": "Boston", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT00171223" }, { "nct_id": "NCT00087204", "title": "Rebeccamycin Analog in Treating Patients With Relapsed or Refractory Acute Myeloid Leukemia, Myelodysplastic Syndrome, Acute Lymphoblastic Leukemia, or Chronic Myelogenous Leukemia", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities", "Adult Acute Myeloid Leukemia With Inv(16)(p13;q22)", "Adult Acute Myeloid Leukemia With t(15;17)(q22;q12)", "Adult Acute Myeloid Leukemia With t(16;16)(p13;q22)", "Adult Acute Myeloid Leukemia With t(8;21)(q22;q22)", "Blastic Phase Chronic Myelogenous Leukemia", "Chronic Myelomonocytic Leukemia", "de Novo Myelodysplastic Syndromes", "Previously Treated Myelodysplastic Syndromes", "Recurrent Adult Acute Lymphoblastic Leukemia", "Recurrent Adult Acute Myeloid Leukemia", "Refractory Anemia With Excess Blasts", "Refractory Anemia With Excess Blasts in Transformation", "Relapsing Chronic Myelogenous Leukemia", "Secondary Acute Myeloid Leukemia", "Secondary Myelodysplastic Syndromes" ], "interventions": [ { "name": "becatecarin", "type": "DRUG" }, { "name": "laboratory biomarker analysis", "type": "OTHER" } ], "intervention_types": [ "DRUG", "OTHER" ], "sponsor": "National Cancer Institute (NCI)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 40, "start_date": "2004-05", "completion_date": null, "has_results": false, "last_update_posted_date": "2013-01-23", "last_synced_at": "2026-10-20T14:33:20.935Z", "location_count": 1, "location_summary": "Houston, Texas", "locations": [ { "city": "Houston", "state": "Texas" } ], "official_url": "https://clinicaltrials.gov/study/NCT00087204" }, { "nct_id": "NCT00022048", "title": "Bevacizumab in Treating Patients With Myelodysplastic Syndrome", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1", "PHASE2" ], "conditions": [ "Leukemia", "Myelodysplastic Syndromes", "Myelodysplastic/Myeloproliferative Neoplasms" ], "interventions": [ { "name": "bevacizumab", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Stanford University", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": null, "start_date": "2001-08", "completion_date": "2004-11", "has_results": false, "last_update_posted_date": "2013-05-15", "last_synced_at": "2026-10-20T14:33:20.935Z", "location_count": 3, "location_summary": "Tucson, Arizona • Stanford, California • Houston, Texas", "locations": [ { "city": "Tucson", "state": "Arizona" }, { "city": "Stanford", "state": "California" }, { "city": "Houston", "state": "Texas" } ], "official_url": "https://clinicaltrials.gov/study/NCT00022048" } ] }