Study of IMGN632 in Patients With Untreated BPDCN and Relapsed/Refractory BPDCN

August 14, 2026 updated by: AbbVie

A Phase 1/2, Multi-center, Open-label Study of IMGN632 Monotherapy Administered Intravenously in Patients With CD123-positive Acute Myeloid Leukemia and Other CD123-positive Hematologic Malignancies

This is an open-label, multi-center, Phase 1/2 study to determine the MTD and assess the safety, tolerability, PK, immunogenicity, and anti-leukemia activity of IMGN632 when administered as monotherapy to patients with CD123+ disease.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

IMGN632 is administered by IV on Day 1 of each cycle, with cycles repeating every 21 days.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
179

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • France
      • Amiens, France
        • Recherche Clinique-Hématologie
      • Besançon, France, 25030
        • CHU de Besancon, Hopital Jean Minjoz
      • Marseille, France, 13009
        • Institut Paoli Calmettes (Marseille)
      • Paris, France
        • Hôpital St Antoine
      • Pessac, France, 33600
        • CHU Bordeaux Hôpital Haut-Lévêque
  • Germany
      • Cologne, Germany, 50937
        • University Hospital of Cologne
      • Leipzig, Germany, 04103
        • University Hospital of Leipzig
  • Italy
      • Bologna, Italy, 40138
        • IRCCS Azienda Ospedaliero-Universitaria di Bologna Policlinico S. Orsola Malpighi
      • Meldola, Italy, 47014
        • Instituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori
      • Milan, Italy, 20141
        • Instituto Europeo di Oncologia
      • Perugia, Italy, 06132
        • Azienda ospedaliera Santa Maria della Misericordia
  • Spain
      • Valencia, Spain, 46026
        • Hospital Universitari i Politecnic La Fe
  • United Kingdom
      • Oxford, United Kingdom, OX3 7LE
        • Churchill Hospital - Oxford
  • United States
    • Alabama
      • Birmingham, Alabama, United States, 35294
        • University of Alabama at Birmingham
    • Arizona
      • Gilbert, Arizona, United States, 85234
        • Banner Health MD Anderson Cancer Center
    • California
      • Duarte, California, United States, 91010
        • City of Hope Medical Center
      • Los Angeles, California, United States, 90095
        • UCLA
      • Stanford, California, United States, 94305
        • Stanford
    • Florida
      • Tampa, Florida, United States, 33612
        • Moffitt Cancer Center
    • Maryland
      • Baltimore, Maryland, United States, 21201
        • University of Maryland Medical Center
    • Massachusetts
      • Boston, Massachusetts, United States, 02215
        • Dana-Farber Cancer Institute
    • New York
      • Buffalo, New York, United States, 14263
        • Roswell Park Cancer Institute
      • New York, New York, United States, 10065
        • Memorial Sloan Kettering Cancer Center
    • North Carolina
      • Charlotte, North Carolina, United States, 28204
        • Novant Health Cancer Institute Hematology
      • Durham, North Carolina, United States, 27710
        • Duke Cancer Institute
      • Winston-Salem, North Carolina, United States, 27103
        • Novant Health Cancer Institute Hematology - Forsyth
    • Texas
      • Dallas, Texas, United States, 75246
        • Baylor Scott & White University Medical Center
      • Houston, Texas, United States, 77030-7095
        • MD Anderson Cancer Center
    • Washington
      • Seattle, Washington, United States, 98109
        • Fred Hutchinson Cancer Research Center/Seattle Cancer Care Alliance

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Disease Characteristics:

    a. Confirmation of CD123 positivity by flow cytometry or IHC. Participants who received prior CD123-targeting agents will be allowed as long as the blasts still have detectable CD123 expression.

  2. Expansion inclusion:

    • Cohort 1 - Participants with relapsed or refractory blastic plasmacytoid dendritic cell neoplasm (BPDCN) with 1-3 prior lines of therapy
    • Cohort 2 - Participants with relapsed AML
    • Cohort 3 - Participants with relapsed relapsed or refractory ALL (including any subtypes: B-cell, T-cell, Ph+ and Ph-)
    • Cohort 4 - Participants with relapsed or refractory other hematologic malignancies not included in the cohorts above (eg, high risk/very high-risk MDS, MPN, CMML, BP-CML).
    • Cohort 5 - Participants with relapsed relapsed or refractory (to nonintense therapies) CD123+ AML.
    • Cohort 6 - Participants with frontline de novo BPDCN at screening who have not received prior systemic therapy and participants with frontline BPDCN who have PCHM and have not received prior systemic therapy.

Note: Participants in Cohort 6 may have received local therapy (radiotherapy, surgical excision, photodynamic therapy). Eligible participants must have a recurrence or progression in the field of local therapy OR disease outside the field of local therapy.

Exclusion Criteria:

  1. Participants who, in the judgment of their treating physician, have appropriate standard of care therapies will be excluded from Cohorts 1 through 5.
  2. Frontline BPDCN participants with central nervous system (CNS) disease will be excluded. A lumbar puncture must be performed during the 28-day screening period, prior to drug administration. Relapsed or refractory BPDCN participants with a known history of CNS disease must have been treated locally, have at least 1 lumbar puncture with no evidence of CNS disease, and must be clinically stable prior to first dose. Concurrent therapy for CNS prophylaxis or continuation of therapy for controlled CNS disease is permitted with the approval of the Sponsor.
  3. Participants with a history of veno-occlusive disease (sinusoidal obstruction syndrome) of the liver.
  4. Participants with a history of Grade 4 capillary leak syndrome, or non-cardiac Grade 4 edema are ineligible, eg, related to tagraxofusp-erzs or other etiology.
  5. Interval from prior cancer therapy: 1. For frontline BPDCN participants with prior local therapy (eg, radiotherapy), participants must not have received treatment within 14 days prior to drug administration on this study. 2. Relapsed or refractory BPDCN participants must not have received any anti-cancer therapy including chemotherapy, immunotherapy, radiotherapy, hormonal, biologic, or any investigational agents within 14 days prior to drug administration on this study. Participants must have recovered to baseline from all acute toxicity from this prior therapy.

Note: the exception that participants who have received a checkpoint inhibitor must not have received that therapy within 28 days prior to drug administration on this study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Escalation and Expansion

Escalation: IMGN632 was administered by IV on 2 different schedules for participants with relapsed/refractory AML, ALL, or BPDCN.

Expansion: IMGN632 was administered by IV:

  • Cohort 1: Relapsed or refractory BPDCN participants who have received 1-3 prior systemic therapies (incl. tagraxofusp-erzs and/or any other systemic therapy deemed appropriate for the treatment of BPDCN)
  • Cohort 2: Relapsed AML
  • Cohort 3: Relapsed or refractory ALL
  • Cohort 4: Other relapsed or refractory hematologic malignancies
  • Cohort 5: Relapsed or refractory AML at alternate dose or schedule
  • Cohort 6: Pivotal cohort for frontline BPDCN participants who have not received prior systemic therapy and participants with frontline BPDCN who have prior or concomitant hematologic malignancy (PCHM) and have not received prior systemic therapy.
Drug: IMGN632
CD123-targeted ADC

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Composite Complete Remission/Response (CCR) Rate As Assessed by Investigator in Frontline De Novo Blastic Plasmacytoid Dendritic Cell Neoplasm (BPDCN) Participants
Time Frame: Up to approximately 81 months
CCR rate was defined as percentage of participants with complete remission/response (CR) and clinical complete remission (CRc). CR was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/microliter [μL]) and platelet count (≥ 100,000/μL); absence of leukemic blasts; 100% clearance of all skin lesions from baseline; no new lesions in participants without lesions at baseline; nodal masses regression to normal size on computed tomography (CT); and spleen and liver not palpable and nodules disappeared. CRc was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; marked clearance of all skin lesions from baseline, residual hyperpigmentation or abnormality with BPDCN identified on biopsy (or no biopsy performed); nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared.
Up to approximately 81 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Dose Escalation Phase: Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
Time Frame: Up to approximately 81 months
An adverse event (AE) was defined as any noxious, pathologic, or unintended change in anatomical, physiologic, or metabolic function as indicated by physical signs, symptoms, or laboratory changes occurring in any phase of a clinical study, whether or not considered study drug related. This included an exacerbation of a pre-existing condition. SAEs included death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized the participant and required medical intervention to prevent 1 of the outcomes listed in this definition. TEAEs were defined as any new AEs that begin or any pre-existing conditions that worsen in severity from the first dose of study drug through 30 days after the last dose or prior to the subsequent therapy, whichever occurs first.
Up to approximately 81 months
Dose Escalation Phase: Number of Participants With Dose-limiting Toxicities (DLTs)
Time Frame: Up to approximately 81 months
DLT was defined as all treatment-emergent adverse events (TEAEs) or abnormal laboratory values that met the protocol-defined DLT criteria, including those TEAEs and abnormal laboratory values that resulted in a failure to meet the criteria for re-treatment. A summary of all SAEs and Other Adverse Events (nonserious) regardless of causality is located in the 'Reported Adverse Events' Section.
Up to approximately 81 months
Maximum Plasma Concentration (Cmax) of IMGN632 (Antibody Drug Conjugate [ADC]) and Total Antibody
Time Frame: Cycle 1 and Cycle 3 (each cycle length = 21 days)
Cycle 1 and Cycle 3 (each cycle length = 21 days)
Cmax of FGN849
Time Frame: Cycle 1 and Cycle 3 (each cycle length = 21 days)
Cycle 1 and Cycle 3 (each cycle length = 21 days)
Area Under the Curve From Time Zero to the Last Quantifiable Concentration (AUC0-last) of IMGN632 (ADC) and Total Antibody
Time Frame: Cycle 1 and Cycle 3 (each cycle length = 21 days)
Cycle 1 and Cycle 3 (each cycle length = 21 days)
AUC0-last of FGN849
Time Frame: Cycle 1 and Cycle 3 (each cycle length = 21 days)
Cycle 1 and Cycle 3 (each cycle length = 21 days)
Number of Participants With Anti-drug Antibodies (ADAs) at Any Post-baseline Visit
Time Frame: Up to approximately 81 months
Up to approximately 81 months
Dose Escalation Phase: Overall Response Rate (ORR), As Assessed by Investigator in Participants With AML
Time Frame: Up to approximately 81 months
ORR was defined as percentage of participants with CR without minimal residual disease (CRMRD-), CR, CR with partial hematologic recovery (CRh), CR with incomplete recovery (CRi), morphologic leukemia-free state (MLFS), or partial response (PR). CRMRD-: CR with negativity for a genetic marker. CR: Morphologic CR <5% blasts; Absolute neutrophil count (ANC) >1000/μL; Platelets ≥100,000/μL; Participant independent of transfusions; No residual evidence of active extramedullary disease; MRD+ or unknown. CRh: Met requirements for CR except ANC >500/μL and platelets >50,000/μL. CRi: Met requirements for CR except either ANC <1000/μL or platelets <100,000/μL. MLFS: Bone marrow <5% blasts in an aspirate with spicules; No blasts with Auer rods or persistence of extramedullary disease; Marrow not "aplastic"; ≥200 cells should be enumerated or cellularity should be ≥10%. PR: Decrease of ≥50% in percentage of blasts to 5% to 25% in bone marrow aspirate (BMA) and normalization of blood counts.
Up to approximately 81 months
Dose Escalation Phase: CR+CRh Rate, As Assessed by Investigator in Participants With AML
Time Frame: Up to approximately 81 months
CR+CRh rate was defined as percentage of participants with CR, and CRh. CR: Morphologic CR <5% blasts; Absolute neutrophil count (ANC) >1000/μL; Platelets ≥100,000/μL; Participant independent of transfusions; No residual evidence of active extramedullary disease; MRD+ or unknown. CRh: Met requirements for CR except ANC >500/μL and platelets >50,000/μL.
Up to approximately 81 months
Dose Escalation Phase: CR+CRh+CRi Rate, As Assessed by Investigator in Participants With AML
Time Frame: Up to approximately 81 months
CR+CRh+CRi rate was defined as percentage of participants with CR, CRh, or CRi. CR: Morphologic CR <5% blasts; Absolute neutrophil count (ANC) >1000/μL; Platelets ≥100,000/μL; Participant independent of transfusions; No residual evidence of active extramedullary disease; MRD+ or unknown. CRh: Met requirements for CR except ANC >500/μL and platelets >50,000/μL. CRi: Met requirements for CR except either ANC <1000/μL or platelets <100,000/μL.
Up to approximately 81 months
CCR Rate As Assessed by Investigator in Participants With Relapsed/Refractory (R/R) BPDCN
Time Frame: Up to approximately 81 months
CCR rate was defined as percentage of participants with CR and CRc. CR was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; 100% clearance of all skin lesions from baseline; no new lesions in participants without lesions at baseline; nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. CRc was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; marked clearance of all skin lesions from baseline, residual hyperpigmentation or abnormality with BPDCN identified on biopsy (or no biopsy performed); nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared.
Up to approximately 81 months
Duration of CCR (DOCR) As Assessed by Investigator in Frontline De Novo BPDCN Participants With CR or CRc
Time Frame: Up to approximately 81 months
DOCR was defined from the first response (CR or CRc) to the time of relapse or death from any cause, whichever came first. CR was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; 100% clearance of all skin lesions from baseline; no new lesions in participants without lesions at baseline; nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. CRc was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; marked clearance of all skin lesions from baseline, residual hyperpigmentation or abnormality with BPDCN identified on biopsy (or no biopsy performed); nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. Median and 95% CI were calculated by Kaplan-Meier estimation.
Up to approximately 81 months
DOCR As Assessed by Investigator in R/R BPDCN Participants With CR or CRc
Time Frame: Up to approximately 81 months
DOCR was defined from the first response (CR or CRc) to the time of relapse or death from any cause, whichever comes first. CR was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; 100% clearance of all skin lesions from baseline; no new lesions in participants without lesions at baseline; nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. CRc was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; marked clearance of all skin lesions from baseline, residual hyperpigmentation or abnormality with BPDCN identified on biopsy (or no biopsy performed); nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared.
Up to approximately 81 months
DOCR As Assessed by Investigator in Total Frontline BPDCN Participants With CR or CRc
Time Frame: Up to approximately 81 months
DOCR was defined from the first response (CR or CRc) to the time of relapse or death from any cause, whichever comes first. CR was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; 100% clearance of all skin lesions from baseline; no new lesions in participants without lesions at baseline; nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. CRc was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; marked clearance of all skin lesions from baseline, residual hyperpigmentation or abnormality with BPDCN identified on biopsy (or no biopsy performed); nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared.
Up to approximately 81 months
Number of Participants With TEAEs in Participants Who Received IMGN632 As a Single Agent at the RP2D Level (0.045 mg/kg)
Time Frame: Up to approximately 81 months
An AE was defined as any noxious, pathologic, or unintended change in anatomical, physiologic, or metabolic function as indicated by physical signs, symptoms, or laboratory changes occurring in any phase of a clinical study, whether or not considered study drug related. This included an exacerbation of a pre-existing condition. TEAEs were defined as any new AEs that began or any pre-existing conditions that worsen in severity from the first dose of study drug through 30 days after the last dose or prior to the subsequent therapy, whichever occurs first.. A summary of all SAEs and Other Adverse Events (nonserious) regardless of causality is located in the 'Reported Adverse Events' Section.
Up to approximately 81 months
Rate of CR+CRc+CRh As Assessed by Investigator in Total R/R BPDCN Participants
Time Frame: Up to approximately 81 months
Rate of CR+CRc+CRh: percentage of participants with CR, CRc, and CRh. CR: normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥1000/μL) and platelet count (≥100,000/μL); absence of leukemic blasts; 100% clearance of all skin lesions from baseline; no new lesions in participants without lesions at baseline; nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. CRc: normalization of blast percentage (≤5%); normalization of neutrophil count (≥1000/μL) and platelet count (≥100,000/μL); absence of leukemic blasts; marked clearance of all skin lesions from baseline, residual hyperpigmentation or abnormality with BPDCN identified on biopsy (or no biopsy performed); nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. CRh: normalization of neutrophil count (≥ 500/μL) and platelet count (≥ 50,000/μL); other criteria same as defined for CRc.
Up to approximately 81 months
Duration of CR+CRc+CRh As Assessed by Investigator in Total R/R BPDCN Participants
Time Frame: Up to approximately 81 months
Duration of CR+CRc+CRh was defined as time from first response to time of relapse or death from any cause, whichever came first. CR: normalization of blast percentage (≤5%); normalization of neutrophil count (≥1000/μL) and platelet count (≥100,000/μL); absence of leukemic blasts; 100% clearance of all skin lesions from baseline; no new lesions; nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. CRc: normalization of blast percentage (≤5%); normalization of neutrophil count (≥1000/μL) and platelet count (≥100,000/μL); absence of leukemic blasts; marked clearance of all skin lesions from baseline, residual hyperpigmentation or abnormality with BPDCN identified on biopsy (or no biopsy performed); nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. CRh: normalization of neutrophil count (≥ 500/μL) and platelet count (≥ 50,000/μL); other criteria same as defined for CRc.
Up to approximately 81 months
ORR As Assessed by Investigator in Total R/R BPDCN Participants
Time Frame: Up to approximately 81 months
ORR: percentage of participants with CR, CRc, CRh, CRi, and PR. CR, CRc, and CRh as defined in Outcome Measure 20 above. CRi: normalization of blast percentage (≤5%); normalization of neutrophil count (≥1000/μL) or platelet count (≥100,000/μL); absence of leukemic blasts; marked clearance of all skin lesions from baseline, residual hyperpigmentation or abnormality with BPDCN identified on biopsy (or no biopsy performed); nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. PR: Decreased by > 50% in blast percentage to 5%-25%; 50% to <100% clearance of all skin lesions from baseline; no new lesions in participants without lesions at baseline; ≥50% decrease in the sum of the product of the diameters (SPD) of up to 6 largest dominant masses, no increase in size of other nodes; ≥ 50% decrease in SPD of nodules (for single nodule in greatest transverse diameter), no increase in size of liver of spleen.
Up to approximately 81 months
Duration of Overall Response As Assessed by Investigator in Total R/R BPDCN Participants
Time Frame: Up to approximately 81 months
Duration of overall response (CR, CRc, CRh, CRi, and PR) was defined as time from first response to time of relapse or death from any cause, whichever came first. CR, CRc, and CRh, CRi, and PR as defined in Outcome Measure 21 above.
Up to approximately 81 months
Overall Survival in Total R/R BPDCN Participants
Time Frame: Up to approximately 81 months
Overall survival was defined as date of first dose until death from any cause.
Up to approximately 81 months
CCR Rate As Assessed by Investigator in All Frontline BPDCN Participants With Post-Treatment Consolidative Stem Cell Transplant (SCT)
Time Frame: Up to approximately 81 months
CCR rate was defined as percentage of participants with CR and CRc. CR was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; 100% clearance of all skin lesions from baseline; no new lesions in participants without lesions at baseline; nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. CRc was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; marked clearance of all skin lesions from baseline, residual hyperpigmentation or abnormality with BPDCN identified on biopsy (or no biopsy performed); nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared.
Up to approximately 81 months
CCR Rate As Assessed by Investigator in All R/R BPDCN Participants With Post-Treatment Consolidative SCT
Time Frame: Up to approximately 81 months
CCR rate was defined as percentage of participants with CR and CRc. CR was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; 100% clearance of all skin lesions from baseline; no new lesions in participants without lesions at baseline; nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared. CRc was defined as normalization of blast percentage (≤ 5%); normalization of neutrophil count (≥ 1000/μL) and platelet count (≥ 100,000/μL); absence of leukemic blasts; marked clearance of all skin lesions from baseline, residual hyperpigmentation or abnormality with BPDCN identified on biopsy (or no biopsy performed); nodal masses regression to normal size on CT; and spleen and liver not palpable and nodules disappeared.
Up to approximately 81 months
Percentage of Participants With Post-baseline Transfusion Independence in BPDCN Participants
Time Frame: Up to approximately 81 months
Post-baseline transfusion independence (red blood cell [RBC] and platelet transfusion independence) was defined as any 56-day period after Cycle 1 Day 1 in which the participant did not receive either a RBC or platelet transfusion.
Up to approximately 81 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
AbbVie

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: ABBVIE INC., AbbVie

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 2, 2018

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 2, 2024

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 30, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 21, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 28, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 29, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 4, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 14, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • IMGN632-0801
  • 2024-514195-40-00 (Ctis)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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