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Androgen Receptor Axis-targeted Therapy

Vobramitamab Duocarmazine for Prostate Cancer (Tamarack Trial)

Phase 2
Waitlist Available
Research Sponsored by MacroGenics
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up every 8 weeks for the first 24 weeks, then every 12 weeks, up to 2 years
Awards & highlights
No Placebo-Only Group

Summary

This trial is testing an experimental drug (MGC018) for mCRPC patients who have had prior ARAT and taxane-containing treatment. 150 participants will be randomized 1:1:1 in Phase 2, and 270 will be randomized 1:1 in Phase 3.

Who is the study for?
Men with metastatic castration-resistant prostate cancer who've had one prior androgen receptor-targeted therapy and possibly one taxane regimen. They must have at least one detectable metastatic lesion, no neuroendocrine or small cell prostate cancer features, acceptable health status, and a tumor tissue sample if they have internal organ metastasis.
What is being tested?
The trial is testing two doses of Vobramitamab Duocarmazine (2.0 mg/kg and 2.7 mg/kg) given every four weeks to see which works better for prostate cancer that has spread despite hormone therapy. Participants will be randomly assigned to either dose group in equal numbers.
What are the potential side effects?
Potential side effects are not specified but may include reactions related to intravenous administration, changes in blood tests results indicating organ function issues, or other symptoms that require discontinuation as determined by the study doctor.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~every 8 weeks for the first 24 weeks, then every 12 weeks, up to 2 years
This trial's timeline: 3 weeks for screening, Varies for treatment, and every 8 weeks for the first 24 weeks, then every 12 weeks, up to 2 years for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Part 1: Radiographic progression free survival (rPFS) as determined by the investigator
Part 2: Objective response rate (ORR) per investigator assessment of Response Evaluation Criteria in Solid Tumours (RECIST) 1.1 criteria
Secondary study objectives
Part 1: Duration of PSA response per PCWG3 criteria
Part 1: Median duration of response (DoR) per PCWG3 criteria as determined by the investigator
Part 1: ORR per PCWG3 criteria as determined by the investigator
+5 more

Awards & Highlights

No Placebo-Only Group
All patients enrolled in this study will receive some form of active treatment.

Trial Design

8Treatment groups
Experimental Treatment
Active Control
Group I: Part 2: Squamous NSCLC cohortExperimental Treatment1 Intervention
MGC018 2.7 mg/kg every 4 weeks
Group II: Part 2: SCLC cohortExperimental Treatment1 Intervention
MGC018 2.7 mg/kg every 4 weeks
Group III: Part 2: Melanoma cohortExperimental Treatment1 Intervention
MGC018 2.7 mg/kg every 4 weeks
Group IV: Part 2: HNSCC cohortExperimental Treatment1 Intervention
MGC018 2.7 mg/kg every 4 weeks
Group V: Part 2: Anal cancer cohortExperimental Treatment1 Intervention
MGC018 2.7 mg/kg every 4 weeks
Group VI: Part 1: MGC018 2.7 mg (Arm B)Experimental Treatment1 Intervention
MGC018 2.7 mg/kg every 4 weeks
Group VII: Part 1: MGC018 2.0 mg (Arm A)Experimental Treatment1 Intervention
MGC018 2.0 mg/kg every 4 weeks
Group VIII: Part 1: Control ArmActive Control2 Interventions
Patients are administered abiraterone or enzalutamide

Find a Location

Who is running the clinical trial?

MacroGenicsLead Sponsor
48 Previous Clinical Trials
4,940 Total Patients Enrolled
9 Trials studying Melanoma
1,234 Patients Enrolled for Melanoma
Ashley Ward, M.D.Study DirectorMacroGenics
2 Previous Clinical Trials
233 Total Patients Enrolled
1 Trials studying Melanoma
143 Patients Enrolled for Melanoma
Stephen L Eck, M.D.Study DirectorMacroGenics
1 Previous Clinical Trials
25 Total Patients Enrolled

Media Library

ARAT (Androgen Receptor Axis-targeted Therapy) Clinical Trial Eligibility Overview. Trial Name: NCT05551117 — Phase 2
Melanoma Research Study Groups: Part 1: Control Arm, Part 1: MGC018 2.0 mg (Arm A), Part 1: MGC018 2.7 mg (Arm B), Part 2: HNSCC cohort, Part 2: Melanoma cohort, Part 2: Squamous NSCLC cohort, Part 2: SCLC cohort, Part 2: Anal cancer cohort
Melanoma Clinical Trial 2023: ARAT Highlights & Side Effects. Trial Name: NCT05551117 — Phase 2
ARAT (Androgen Receptor Axis-targeted Therapy) 2023 Treatment Timeline for Medical Study. Trial Name: NCT05551117 — Phase 2
~79 spots leftby Nov 2025