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NCT05551117 · OUTCOME

Part 1: Median Duration of Response (DoR) Per PCWG3 Criteria as Determined by the Investigator

A Study of Vobramitamab Duocarmazine in Participants With Metastatic Castration Resistant Prostate Cancer and Other Solid Tumors · Source last updated 2026-02-09

Results reported by the registry submitting party. Population, time horizon, units and missing values must be read together.

Measure
MEDIAN
Unit
months
Interval / dispersion
95% Confidence Interval
Time frame
Every 8 weeks for the first 24 weeks, then every 12 weeks. Average duration of participation, 10 months.

What was measured

The DoR will be calculated as the time from the date of initial tumor response (CR or PR) to the date of first documented PD or death from any cause, whichever occurs first.

Analysis population: All participants with mCRPC who achieved a confirmed complete or partial response to study treatment. No participants in the control group had a complete or partial response. Participants in Part 2 did not have mCRPC, so were not eligible for response using PCWG3 criteria.

Groups in this outcome

Part 1: MGC018 2.0 mg (Arm A)

vobramitamab duocarmazine 2.0 mg/kg, IV, every 4 weeks

Part 1: MGC018 2.7 mg (Arm B)

vobramitamab duocarmazine 2.7 mg/kg, IV, every 4 weeks

Part 1: Control Arm

abiraterone 1000 mg once daily or enzalutamide 160 mg once daily.

Part 2

vobramitamab duocarmazine 2.7 mg.kg, IV, every 4 weeks

Group identifiers and denominators belong to this outcome only. They may differ in another outcome or in safety reporting.

Analysis denominator · Participants

GroupSource count
Part 1: MGC018 2.0 mg (Arm A)8
Part 1: MGC018 2.7 mg (Arm B)15
Part 1: Control Arm0
Part 20

Reported measurements

Source class 1
Values in months · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Part 1: MGC018 2.0 mg (Arm A)9.4Not reported3.68NAThe upper bound of the CI could not be estimated due to insufficient number of participants with events
Part 1: MGC018 2.7 mg (Arm B)9.1Not reported5.789.92Not reported
Complete source fields
classes
  1. categories
    1. measurements
      1. comment
        The upper bound of the CI could not be estimated due to insufficient number of participants with events
        group Id
        OG000
        lower Limit
        3.68
        upper Limit
        NA
        value
        9.4
      2. group Id
        OG001
        lower Limit
        5.78
        upper Limit
        9.92
        value
        9.1
denoms
  1. counts
    1. group Id
      OG000
      value
      8
    2. group Id
      OG001
      value
      15
    3. group Id
      OG002
      value
      0
    4. group Id
      OG003
      value
      0
    units
    Participants
description
The DoR will be calculated as the time from the date of initial tumor response (CR or PR) to the date of first documented PD or death from any cause, whichever occurs first.
dispersion Type
95% Confidence Interval
groups
  1. description
    vobramitamab duocarmazine 2.0 mg/kg, IV, every 4 weeks
    id
    OG000
    title
    Part 1: MGC018 2.0 mg (Arm A)
  2. description
    vobramitamab duocarmazine 2.7 mg/kg, IV, every 4 weeks
    id
    OG001
    title
    Part 1: MGC018 2.7 mg (Arm B)
  3. description
    abiraterone 1000 mg once daily or enzalutamide 160 mg once daily.
    id
    OG002
    title
    Part 1: Control Arm
  4. description
    vobramitamab duocarmazine 2.7 mg.kg, IV, every 4 weeks
    id
    OG003
    title
    Part 2
param Type
MEDIAN
population Description
All participants with mCRPC who achieved a confirmed complete or partial response to study treatment. No participants in the control group had a complete or partial response. Participants in Part 2 did not have mCRPC, so were not eligible for response using PCWG3 criteria.
reporting Status
POSTED
time Frame
Every 8 weeks for the first 24 weeks, then every 12 weeks. Average duration of participation, 10 months.
title
Part 1: Median Duration of Response (DoR) Per PCWG3 Criteria as Determined by the Investigator
type
SECONDARY
unit Of Measure
months

Download exact source JSON → · Snapshot ctgov-results-25a395029948b04d52b1253f

Preserved source evidence · Not medical advice