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Study identifier: NCT06150157 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

A Study of JNJ-88549968 for the Treatment of Calreticulin (CALR)-Mutated Myeloproliferative Neoplasms

Condition: Neoplasms  ·  Sponsor: Janssen Research & Development, LLC

PhasePhase 1
Planned participants241
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The purpose of this study is to characterize safety and to determine the Recommended Phase 2 Dose (RP2D\[s\]) and optimal dosing schedule(s) of JNJ-88549968 in part 1 (Dose Escalation); to characterize the safety of JNJ- 88549968 at RP2D(s) in part 2 (Cohort Expansion). For U.S. sites: the purpose of this study is to characterize the safety and to determine the RP2D(s) and optimal dosing schedule(s) of JNJ-88549968 in Part 1 and part 1b (Dose Escalation), and to characterize the safety of JNJ-88549968 at the RP2D(s) in Part 2 and part 2b (Cohort Expansion), when given as monotherapy in essential thrombocythemia (ET) or myelofibrosis (MF), and with ruxolitinib or momelotinib in MF only.

This description comes directly from the study's public registry record.

Talk to the study team

Study Contact  ·  844-434-4210  ·  Participate-In-This-Study1@its.jnj.com

Always discuss trial participation with your own doctor first.

Locations (36)

City of HopeDuarte, California, United StatesRecruiting
UCHealth Cancer Care Anschutz Medical Campus University of Colorado Cancer CenterAurora, Colorado, United StatesRecruiting
Moffit Cancer centerTampa, Florida, United StatesRecruiting
Emory UniversityAtlanta, Georgia, United StatesRecruiting
University of MichiganAnn Arbor, Michigan, United StatesRecruiting
Memorial Sloan Kettering Cancer CenterNew York, New York, United StatesRecruiting
Montefiore Medical CenterThe Bronx, New York, United StatesRecruiting
Levine Cancer InstituteCharlotte, North Carolina, United StatesRecruiting
University of PennsylvaniaPhiladelphia, Pennsylvania, United StatesRecruiting
Sarah Cannon Cancer InstituteNashville, Tennessee, United StatesRecruiting
MD Anderson Cancer CenterHouston, Texas, United StatesRecruiting
Princess Margaret Cancer Centre University Health NetworkToronto, Ontario, CanadaRecruiting

+ 24 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT06150157