Neal Fischbach, MD
he/him/his
Assistant Professor of Medicine (Medical Oncology)Cards
About
Titles
Assistant Professor of Medicine (Medical Oncology)
Assistant Medical Director, Clinical Trials Office
Biography
Dr. Neal Fischbach is a medical oncologist focusing on breast cancer. He attended the University of Pennsylvania and Harvard University Medical School and completed his fellowship at the University of California San Francisco. He is the Assistant Medical Director to the Clinical Trials Office for the Care Centers, coordinating clinical trials activities across Yale’s network of Care Centers.
Last Updated on April 07, 2023.
Appointments
Medical Oncology and Hematology
Assistant ProfessorPrimary
Other Departments & Organizations
- Cancer Prevention and Control
- Internal Medicine
- Medical Oncology and Hematology
- Yale Cancer Center
- Yale Medicine
- Yale New Haven Health System
Education & Training
- Fellowship
- University of California - San Francisco (2002)
- Residency
- University of California - San Francisco (1999)
- MD
- Harvard Medical School (1995)
- MD
- University of Pennsylvania School of Medicine (1990)
Research
Publications
2026
Clinical Trial Patient Matching: A Real-Time, Common Data Model and Artificial Intelligence–Driven System for Semiautomated Patient Prescreening in Cancer Clinical Trials
Gong G, Liu J, Pandya S, Taborda C, Wiesendanger N, Price N, Byron W, Coppi A, Young P, Wiess C, Dunning H, Barganier C, Brodeur R, Fischbach N, LoRusso P, Pusztai L, Kim S, Rozenblit M, Cecchini M, Mongiu A, Mendez L, Kaftan E, Torre C, Krumholz H, Krop I, Schulz W, Lustberg M, Kunz P. Clinical Trial Patient Matching: A Real-Time, Common Data Model and Artificial Intelligence–Driven System for Semiautomated Patient Prescreening in Cancer Clinical Trials. JCO Clinical Cancer Informatics 2026, 10: e2500262. PMID: 41512229, DOI: 10.1200/cci-25-00262.Peer-Reviewed Original ResearchConceptsObservational Medical Outcomes PartnershipHealth systemColorectal cancerElectronic health record dataCancer clinical trial enrollmentChart reviewHealth record dataManual chart reviewClinical trial recruitmentClinical trialsCancer clinical trialsCancer specialtiesCommon data modelScreen timeColorectal cancer trialsClinical trial enrollmentTrial recruitmentClinical chart reviewConsent ratesPatient accessExhaustive chart reviewMetastatic colorectal cancerEnrollment challengesRecord dataTrial enrollment
2025
Invasive breast carcinoma in a patient with PHTS: a case report
Zhan H, Fischbach N, Lynch M, Liang Y, Krishnamurti U, Cohen P. Invasive breast carcinoma in a patient with PHTS: a case report. Diagnostic Pathology 2025, 20: 120. PMID: 41107919, PMCID: PMC12532417, DOI: 10.1186/s13000-025-01715-1.Peer-Reviewed Original ResearchConceptsPTEN hamartoma tumor syndromeAtypical ductal hyperplasiaHamartoma tumor syndromeTumor syndromeFamily historyBilateral palpable breast massesFocal atypical ductal hyperplasiaFamily history of cancerInvasive breast carcinomaPalpable breast massesEctopic breast tissueBloody nipple dischargeAxillary lymph nodesGermline pathogenic variantsHistory of cancerCase presentationWeInvasive carcinomaBreast carcinomaDuctal hyperplasiaMastectomy specimensNipple dischargeRight breastBenign papillomasMultiple biopsiesPapillary proliferation
2024
Perioperative Modified FOLFIRINOX for Resectable Pancreatic Cancer
Cecchini M, Salem R, Robert M, Czerniak S, Blaha O, Zelterman D, Rajaei M, Townsend J, Cai G, Chowdhury S, Yugawa D, Tseng R, Arbelaez C, Jiao J, Shroyer K, Thumar J, Kortmansky J, Zaheer W, Fischbach N, Persico J, Stein S, Khan S, Cha C, Billingsley K, Kunstman J, Johung K, Wiess C, Muzumdar M, Spickard E, Aushev V, Laliotis G, Jurdi A, Liu M, Escobar-Hoyos L, Lacy J. Perioperative Modified FOLFIRINOX for Resectable Pancreatic Cancer. JAMA Oncology 2024, 10: 1027-1035. PMID: 38900452, PMCID: PMC11190830, DOI: 10.1001/jamaoncol.2024.1575.Peer-Reviewed Original ResearchProgression-free survivalPancreatic ductal adenocarcinomaOverall survivalCtDNA levelsPhase 2 nonrandomized controlled trialAnalysis of circulating tumor DNAMedian progression-free survivalResectable pancreatic ductal adenocarcinomaControlled TrialsAssess surgical candidacyBaseline ctDNA levelModified 5-fluorouracilResectable pancreatic cancerPancreatic protocol computed tomographyAssociated with recurrenceTumor molecular featuresAggressive malignant tumorKaplan-Meier estimatesRandomized clinical trialsStandard of careCtDNA-positivePreoperative cyclesNonrandomized controlled trialsUnresectable diseaseModified FOLFIRINOX
2023
Prognostic impact of reduced HER2 protein expression in post-neoadjuvant therapy resection specimens: A single institution experience and review of the literature
Mogica J, Tang H, Liang Y, Zhong M, Hui P, Harigopal M, Krishnamurti U, Fischbach N, Zhan H. Prognostic impact of reduced HER2 protein expression in post-neoadjuvant therapy resection specimens: A single institution experience and review of the literature. The Breast 2023, 72: 103586. PMID: 37812963, PMCID: PMC10568274, DOI: 10.1016/j.breast.2023.103586.Peer-Reviewed Original ResearchConceptsHER2 IHC 3Human epidermal growth factor receptor 2Kaplan-Meier survival analysisHER2-IHC expressionPathologic complete responseResidual diseaseIHC 3Breast cancerIHC expressionSurvival analysisSuperior disease-free survivalEpidermal growth factor receptor 2Intensive adjuvant therapyPost-therapy surveillanceYale Cancer CenterDisease-free survivalGrowth factor receptor 2Recurrence-free survivalSingle institution experienceLow recurrence rateFactor receptor 2HER2 protein expressionAdjuvant trialsNeoadjuvant treatmentAdjuvant therapy
2022
Clinical outcomes and immune markers by race in a Phase I/II clinical trial of durvalumab concomitant with neoadjuvant chemotherapy in early stage TNBC
Foldi J, Kahn A, Silber A, Qing T, Reisenbichler E, Fischbach N, Persico J, Adelson K, Katoch A, Chagpar A, Park T, Blanchard A, Blenman K, Rimm DL, Pusztai L. Clinical outcomes and immune markers by race in a Phase I/II clinical trial of durvalumab concomitant with neoadjuvant chemotherapy in early stage TNBC. Clinical Cancer Research 2022, 28: 3720-3728. PMID: 35903931, PMCID: PMC9444984, DOI: 10.1158/1078-0432.ccr-22-0862.Peer-Reviewed Original ResearchConceptsImmune-related adverse eventsTriple-negative breast cancerNon-AA patientsEvent-free survivalPhase I/II clinical trialsClinical trialsNeoadjuvant chemotherapyOverall survivalAA patientsEarly-stage triple-negative breast cancerIncidence of irAEsPathologic complete response rateSignificant associationMultivariate logistic regression analysisTumor-infiltrating lymphocyte countsComplete response ratePrimary efficacy endpointPD-L1 statusProportional hazards modelLogistic regression analysisAfrican American womenEFS ratesNeoadjuvant immunotherapyEfficacy endpointAdverse eventsAuthor Correction: Neoadjuvant durvalumab plus weekly nab-paclitaxel and dose-dense doxorubicin/cyclophosphamide in triple-negative breast cancer
Foldi J, Silber A, Reisenbichler E, Singh K, Fischbach N, Persico J, Adelson K, Katoch A, Horowitz N, Lannin D, Chagpar A, Park T, Marczyk M, Frederick C, Burrello T, Ibrahim E, Qing T, Bai Y, Blenman K, Rimm DL, Pusztai L. Author Correction: Neoadjuvant durvalumab plus weekly nab-paclitaxel and dose-dense doxorubicin/cyclophosphamide in triple-negative breast cancer. Npj Breast Cancer 2022, 8: 17. PMID: 35115541, PMCID: PMC8814070, DOI: 10.1038/s41523-022-00392-3.Commentaries, Editorials and Letters
2021
Neoadjuvant durvalumab plus weekly nab-paclitaxel and dose-dense doxorubicin/cyclophosphamide in triple-negative breast cancer
Foldi J, Silber A, Reisenbichler E, Singh K, Fischbach N, Persico J, Adelson K, Katoch A, Horowitz N, Lannin D, Chagpar A, Park T, Marczyk M, Frederick C, Burrello T, Ibrahim E, Qing T, Bai Y, Blenman K, Rimm DL, Pusztai L. Neoadjuvant durvalumab plus weekly nab-paclitaxel and dose-dense doxorubicin/cyclophosphamide in triple-negative breast cancer. Npj Breast Cancer 2021, 7: 9. PMID: 33558513, PMCID: PMC7870853, DOI: 10.1038/s41523-021-00219-7.Peer-Reviewed Original ResearchStromal tumor-infiltrating lymphocytesWeekly nab-paclitaxelTriple-negative breast cancerPD-L1Nab-paclitaxelAdverse eventsBreast cancerGrade 3/4 treatment-related adverse eventsPhase I/II trialGrade 3/4 adverse eventsTreatment-related adverse eventsDoxorubicin/cyclophosphamidePhase II studyGuillain-Barre syndromeMononuclear inflammatory cellsPathologic complete responseTumor-infiltrating lymphocytesTumor cell stainingEvaluable patientsNeoadjuvant durvalumabSP263 antibodyII trialNeoadjuvant chemotherapyNeoadjuvant therapyPrimary endpoint
2020
A phase 1b expansion study of TAS‐102 with oxaliplatin for refractory metastatic colorectal cancer
Cecchini M, Kortmansky JS, Cui C, Wei W, Thumar JR, Uboha NV, Hafez N, Lacy J, Fischbach NA, Sabbath KD, Gomez CM, Sporn JR, Stein S, Hochster HS. A phase 1b expansion study of TAS‐102 with oxaliplatin for refractory metastatic colorectal cancer. Cancer 2020, 127: 1417-1424. PMID: 33351187, PMCID: PMC8085021, DOI: 10.1002/cncr.33379.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAntineoplastic AgentsAntineoplastic Combined Chemotherapy ProtocolsColorectal NeoplasmsDrug Administration ScheduleDrug CombinationsDrug Resistance, NeoplasmFemaleFluorouracilHumansIrinotecanLeucovorinMaleMiddle AgedOrganoplatinum CompoundsOxaliplatinProgression-Free SurvivalPyrrolidinesResponse Evaluation Criteria in Solid TumorsThymineTrifluridineConceptsMetastatic colorectal cancerOverall response rateRefractory metastatic colorectal cancerProgression-free survivalTAS-102Colorectal cancerDay 1Primary endpointOverall survivalDose escalationDay 5Median progression-free survivalPhase 1b studyMedian overall survivalResponse Evaluation CriteriaTreat populationDose expansionPartial responseStandard dosesUnexpected side effectsStudy treatmentTumor shrinkageUnexpected toxicitiesSide effectsNovel antimetabolite
2018
Bullous disorders associated with anti–PD-1 and anti–PD-L1 therapy: A retrospective analysis evaluating the clinical and histopathologic features, frequency, and impact on cancer therapy
Siegel J, Totonchy M, Damsky W, Berk-Krauss J, Castiglione F, Sznol M, Petrylak DP, Fischbach N, Goldberg SB, Decker RH, Stamatouli AM, Hafez N, Glusac EJ, Tomayko MM, Leventhal JS. Bullous disorders associated with anti–PD-1 and anti–PD-L1 therapy: A retrospective analysis evaluating the clinical and histopathologic features, frequency, and impact on cancer therapy. Journal Of The American Academy Of Dermatology 2018, 79: 1081-1088. PMID: 30025829, DOI: 10.1016/j.jaad.2018.07.008.Peer-Reviewed Original ResearchMeSH KeywordsAdrenal Cortex HormonesAgedAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntineoplastic Agents, ImmunologicalB7-H1 AntigenDrug EruptionsFemaleHumansLichenoid EruptionsMaleMiddle AgedNeoplasm ProteinsNeoplasmsNivolumabPemphigoid, BullousProgrammed Cell Death 1 ReceptorRetrospective StudiesSkin Diseases, VesiculobullousTertiary Care CentersTreatment OutcomeConceptsPD-L1 therapyAnti-PD-1/PD-L1 therapyBullous disordersBullous eruptionPD-1/PD-L1 therapyCell death ligand-1 therapyAnti-programmed cell death 1Cancer therapyDeath ligand 1 therapySingle tertiary care centerLinear IgA bullous dermatosisYale-New Haven HospitalDistinct therapeutic challengesInterruption of immunotherapyPositive tumor responseSteroid-sparing agentTertiary care centerIgA bullous dermatosisCell death 1New Haven HospitalStable diseaseSystemic corticosteroidsSystemic steroidsMaintenance therapyL1 therapy
2017
Phase II Study of Modified FOLFOX6 With Bevacizumab in Metastatic Gastroesophageal Adenocarcinoma
Li J, Yao X, Kortmansky JS, Fischbach NA, Stein S, Deng Y, Zhang Y, Doddamane I, Karimeddini D, Hochster HS, Lacy J. Phase II Study of Modified FOLFOX6 With Bevacizumab in Metastatic Gastroesophageal Adenocarcinoma. American Journal Of Clinical Oncology 2017, 40: 146-151. PMID: 25144267, DOI: 10.1097/coc.0000000000000114.Peer-Reviewed Original ResearchConceptsMetastatic gastroesophageal adenocarcinomaProgression-free survivalGastroesophageal adenocarcinomaOverall survivalTreatment-related grade 3/4 toxicityResponse rateMedian progression-free survivalProspective phase II trialLonger progression-free survivalCisplatin-based regimensConfirmed response rateEfficacy of bevacizumabFirst-line bevacizumabOxaliplatin-based regimenUntreated metastatic adenocarcinomaGrade 3/4 toxicitiesMedian overall survivalAddition of bevacizumabPhase II studyPhase II trialModified FOLFOX6GI perforationHemorrhagic eventsII trialII study
Clinical Trials
Current Trials
Phase 2 Study of Pembrolizumab and Brentuximab Vedotin in Subjects With Relapsed/Refractory CD30 Positive T-cell Lymphoma
IRB ID2000029793RoleSub InvestigatorPrimary Completion Date04/30/2028Recruiting ParticipantsPhase II Trial of SMO/ AKT/ NF2/CDK Inhibitors in Progressive Meningiomas With SMO/ AKT/ NF2/CDK Pathway Mutations
IRB ID2000021311RoleSub InvestigatorPrimary Completion Date10/31/2024Recruiting ParticipantsRandomized Phase II Trial of Postoperative Adjuvant Capecitabine and Temozolomide Versus Observation in High-Risk Pancreatic Neuroendocrine Tumors
IRB ID2000032098RoleSub InvestigatorPrimary Completion Date03/31/2027Recruiting ParticipantsA Randomized, Phase IIB, Multicenter, Trial of Oral Azacytidine Plus Romidepsin Versus Investigator's Choice in Patients With Relapse or Refractory Peripheral T-cell Lymphoma (PTCL)
IRB ID2000030190RoleSub InvestigatorPrimary Completion Date06/02/2026Recruiting ParticipantsA Phase II Randomized Trial of Adjuvant Therapy With Pembrolizumab After Resection of Recurrent/Second Primary Head and Neck Squamous Cell Carcinoma With High Risk Features
IRB ID2000031055RoleSub InvestigatorPrimary Completion Date02/28/2026Recruiting Participants
Academic Achievements & Community Involvement
Clinical Care
Overview
Neal Fischbach, MD, is a medical oncologist who focuses on caring for people with breast cancer.
“My priority is getting people the very best cancer care available in whatever environment they prefer,” Dr. Fischbach says. “I am focused not only on treating cancer but the impact a cancer diagnosis has on family members and friends. I am committed to making the latest advances in cancer care available to people through participation in clinical trials.”
As an assistant professor of medicine (medical oncology) at Yale School of Medicine, Dr. Fischbach also serves as the assistant medical director of the clinical trials office for the Smilow Cancer Hospital Care Center Network, coordinating clinical trial activities across Yale’s care centers.
He completed his medical training at Harvard Medical School and pursued a residency in internal medicine, followed by a fellowship in hematology and oncology at the University of California, San Francisco.
Clinical Specialties
Medical Oncology
Fact Sheets
Inflammatory Breast Cancer
Learn More on Yale MedicineHormonal Therapy for Cancer
Learn More on Yale MedicineBreast Cancer
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Board Certifications
Medical Oncology
- Certification Organization
- AB of Internal Medicine
- Latest Certification Date
- 2019
- Original Certification Date
- 2002
Yale Medicine News
News
News
- April 01, 2025
Comprehensive Breast Cancer Care at Smilow Cancer Hospital in Trumbull, Fairfield, and at Bridgeport Hospital
- October 09, 2024
Smilow Cares - Cannabis in Cancer Care: A Historical Overview and Current Perspectives
- June 20, 2024
Chemotherapy Before Surgery Benefits Some Patients With Pancreatic Cancer
- June 12, 2024Source: Yale New Haven Health
Yale New Haven Health and Yale University celebrate Innovation Awards
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Contacts
Appointment Number
Clinic Fax Number
Mailing Address
Yale Cancer Center
5520 Park Avenue, Suite 307
Trumbull, CT 06611
United States
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