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Kartos Therapeutics

HQ: Redwood City, CA source · kartosthera.com ↗ · West Coast

Status: Acquired, now part of Ipsen · How status works

Clinical Phase 3

Location: Redwood City, CA · source · Oct 14, 2026

Profile checked Oct 10, 2026

Keywords: Myelofibrosis Oncology Post-PV MF Post-ET Myelofibrosis Primary Myelofibrosis Endometrial Cancer Relapsed or Refractory Acute Myeloid Leukemia (AML) Acute Myeloid Leukemia (AML), Secondary to Myeloproliferative Neoplasms (MPN) Non Small Cell Lung Cancer Small-cell Lung Cancer Small Cell Lung Carcinoma Small Cell Lung Cancer Extensive Stage Small Cell Lung Cancer Recurrent Post-Polycythemia Vera MF Post-Essential Thrombocythemia MF Merkel Cell Carcinoma Diffuse Large B Cell Lymphoma Chronic Lymphocytic Leukemia Non Hodgkin Lymphoma Post-Polycythemia Vera Myelofibrosis Post-Essential Thrombocythemia Myelofibrosis Chronic Myeloid Leukemia Glioblastoma Multiple Myeloma Melanoma Polycythemia Vera Acute Myeloid Leukemia KRT-232 AMG 232 TL-895 Navtemadlin

16Trials (company is sponsor)

Timeline

  1. Trial start Phase 3: Study of Navtemadlin add-on to Ruxolitinib in JAK Inhibitor-Naïve Patients With Myelofibrosis Who Have a Suboptimal Response to Ruxolitinib source ↗
  2. Trial start Phase 2/Phase 3: Study of Navtemadlin as Maintenance Therapy in TP53WT Advanced or Recurrent Endometrial Cancer source ↗
  3. Trial start Phase 1/Phase 2: Study of Navtemadlin Plus Pembrolizumab as Maintenance Therapy in Locally Advanced and Metastatic Non-Small Cell Lung Cancer source ↗
  4. Trial start Phase 2: KRT-232 in Subjects With Relapsed or Refractory Small Cell Lung Cancer source ↗
  5. Trial start Phase 1/Phase 2: KRT-232 and TKI Study in Chronic Myeloid Leukemia source ↗
  6. Trial start Phase 2: Study of KRT-232 or TL-895 in Janus Associated Kinase Inhibitor Treatment-Naïve Myelofibrosis source ↗
  7. Trial start Phase 1/Phase 2: Safety and Efficacy of KRT-232 in Combination With Acalabrutinib in Subjects With R/R DLBCL or R/R CLL source ↗
  8. Trial start 1: An Open-Label, Multicenter, Phase 1b/2 Study of the Safety and Efficacy of KRT-232 Combined With Ruxolitinib in Patients With Primary Myelofibrosis (PMF), Post-Polycythemia Vera MF (Post-PV-MF), Or source ↗
  9. Trial start Phase 1/Phase 2: KRT-232 in Combination With TL-895 for the Treatment of R/R MF and KRT-232 for the Treatment of JAKi Intolerant MF source ↗
  10. Trial start 1: An Open-Label, Multicenter, Phase 1b/2 Study of the Safety and Efficacy of KRT-232 When Administered Alone and in Combination With Low-Dose Cytarabine (LDAC) or Decitabine in Patients With Acute My source ↗
  11. Trial start Phase 1/Phase 2: Navtemadlin (KRT-232) With or Without Anti-PD-1/Anti-PD-L1 for the Treatment of Patients With Merkel Cell Carcinoma source ↗
  12. Trial start Phase 2/Phase 3: KRT-232 Versus Best Available Therapy for the Treatment of Subjects With Myelofibrosis Who Are Relapsed or Refractory to JAK Inhibitor Treatment source ↗
  13. Trial start Phase 2: KRT-232 Compared to Ruxolitinib in Patients With Phlebotomy-Dependent Polycythemia Vera source ↗
  14. Trial start 1: A Phase 1b/2a Study Evaluating AMG 232 in Metastatic Melanoma source ↗
  15. Trial start 1: A Phase 1b Study Evaluating AMG 232 Alone and in Combination With Trametinib in Acute Myeloid Leukemia source ↗
  16. Trial start 1: A Phase 1 Study Evaluating AMG 232 in Advanced Solid Tumors or Multiple Myeloma source ↗

Upcoming milestones

Estimated primary completion per ClinicalTrials.gov. Dates move.

Clinical trials (lead sponsor) 16

RecordTitlePhaseStatusStartPrimary completion
NCT06479135Study of Navtemadlin add-on to Ruxolitinib in JAK Inhibitor-Naïve Patients With Myelofibrosis Who Have a Suboptimal Response to RuxolitinibPhase 3RecruitingJun 3, 2024Dec 31, 2026 (estimated)
NCT05797831Study of Navtemadlin as Maintenance Therapy in TP53WT Advanced or Recurrent Endometrial CancerPhase 2/Phase 3RecruitingJul 17, 20232025-08 (estimated)
NCT04113616An Open-Label, Multicenter, Phase 1b/2 Study of the Safety and Efficacy of KRT-232 When Administered Alone and in Combination With Low-Dose Cytarabine (LDAC) or Decitabine in Patients With Acute Myeloid Leukemia (AML)1TerminatedSep 25, 2019Sep 27, 2023 (actual)
NCT05705466Study of Navtemadlin Plus Pembrolizumab as Maintenance Therapy in Locally Advanced and Metastatic Non-Small Cell Lung CancerPhase 1/Phase 2Withdrawn2023-062025-06 (estimated)
NCT05027867KRT-232 in Subjects With Relapsed or Refractory Small Cell Lung CancerPhase 2TerminatedDec 6, 2021Aug 26, 2022 (actual)
NCT03662126KRT-232 Versus Best Available Therapy for the Treatment of Subjects With Myelofibrosis Who Are Relapsed or Refractory to JAK Inhibitor TreatmentPhase 2/Phase 3Unknown status (ClinicalTrials.gov)Jan 15, 2019Dec 31, 2023 (estimated)
NCT03787602Navtemadlin (KRT-232) With or Without Anti-PD-1/Anti-PD-L1 for the Treatment of Patients With Merkel Cell CarcinomaPhase 1/Phase 2Unknown status (ClinicalTrials.gov)Mar 19, 20192024-11 (estimated)
NCT04502394Safety and Efficacy of KRT-232 in Combination With Acalabrutinib in Subjects With R/R DLBCL or R/R CLLPhase 1/Phase 2RecruitingFeb 23, 20212022-10 (estimated)
NCT04485260An Open-Label, Multicenter, Phase 1b/2 Study of the Safety and Efficacy of KRT-232 Combined With Ruxolitinib in Patients With Primary Myelofibrosis (PMF), Post-Polycythemia Vera MF (Post-PV-MF), Or Post-Essential Thrombocythemia MF (Post ET-MF) Who Have a Suboptimal Response to Ruxolitinib1Unknown status (ClinicalTrials.gov)Jan 28, 20212022-10 (estimated)
NCT04878003Study of KRT-232 or TL-895 in Janus Associated Kinase Inhibitor Treatment-Naïve MyelofibrosisPhase 2Unknown status (ClinicalTrials.gov)Apr 13, 20212024-05 (estimated)
NCT04640532KRT-232 in Combination With TL-895 for the Treatment of R/R MF and KRT-232 for the Treatment of JAKi Intolerant MFPhase 1/Phase 2Unknown status (ClinicalTrials.gov)Nov 17, 2020May 11, 2022 (estimated)
NCT04835584KRT-232 and TKI Study in Chronic Myeloid LeukemiaPhase 1/Phase 2Unknown status (ClinicalTrials.gov)May 7, 2021Dec 31, 2024 (estimated)
NCT01723020A Phase 1 Study Evaluating AMG 232 in Advanced Solid Tumors or Multiple Myeloma1CompletedDec 27, 2012Mar 15, 2017 (actual)
NCT02110355A Phase 1b/2a Study Evaluating AMG 232 in Metastatic Melanoma1CompletedDec 19, 2014Dec 27, 2018 (actual)
NCT03669965KRT-232 Compared to Ruxolitinib in Patients With Phlebotomy-Dependent Polycythemia VeraPhase 2Active, not recruitingJan 15, 20192022-04 (estimated)
NCT02016729A Phase 1b Study Evaluating AMG 232 Alone and in Combination With Trametinib in Acute Myeloid Leukemia1CompletedApr 1, 2014Apr 19, 2017 (actual)
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