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NCT04840615 · OUTCOME

Recommended Phase 2 Dose (RP2D) of Intratumorally Administered LMB-100 in Participants With Mesothelioma

Intratumor Injection of Anti-Mesothelin Immunotoxin LMB-100 With Ipilimumab in Malignant Mesothelioma · Source last updated 2024-02-02

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

Measure
NUMBER
Unit
mcg/kg
Interval / dispersion
Not reported
Time frame
21 days after first LMB-100 administration

What was measured

RP2D is defined as the highest dose at which fewer than 2 of 6 participants experience a dose-limiting toxicity. A dose-limiting toxicity is defined as any Grade 4 hematological toxicity lasting greater than 5 days. Grade 3 febrile neutropenia, Grade 3 thrombocytopenia associated with bleeding episodes, any Grade 3 or greater, non-hematological toxicity with the following exceptions: tumor lysis syndrome, Grade 3 electrolyte changes associated with clinically significant consequences, Grade 3 nausea and diarrhea which has not received appropriate treatment, isolated Grade 3 fever occurring within 48 hours of LMB-100 infusion and resolving within 48 hours to ≤ Grade 2 and fully resolved within 1 week, alopecia, infusion-related reactions up to and including Grade 3, asymptomatic ≥ Grade 3 lymphopenia, leukopenia, hypoalbuminemia, electrolyte abnormalities resolving within 24 hours, and increase in alkaline phosphatase.

Groups in this outcome

All Participants in Dose Level 1: 400 mcg LMB-100

All participants that received at least one dose of both LMB-100 and Ipilimumab. Dose Level 1: 400 mcg LMB-100 administered per dose, dose administered on days 1 and 4 of 21-day cycle, cycle 1 in participants with pleural or peritoneal mesothelioma. Those with pleural or peritoneal mesothelioma receiving intra-tumoral administration of LMB-100 + Ipilimumab for up to 4 cycles. For infusion related reactions precaution, all participants will be premedicated 30-60 minutes (+ 30 minutes) prior to each LMB-100 administration with the following medications: Diphenhydramine 25-50 mg by mouth (PO) or intravenous (IV) (or alternative antihistamine at adequate dose), Famotidine 20 mg by mouth (PO) or intravenous (IV) (or alternative histamine H2- receptor antagonists (H2) blocker at adequate dose), and Acetaminophen 650 mg by mouth (PO) or intravenous (IV). Additional infusion precaution at infusions of LMB-100 after Cycle 1 Day 1 (as appropriate): Dexamethasone 20 mg by mouth (PO), 6-12 hours prior to LMB-100 administration OR 10mg, intravenous (IV), 30-60 minutes prior to LMB-100 administration OR equivalent dose of another corticosteroid as clinically indicated.

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

Analysis denominator · Participants

GroupSource count
All Participants in Dose Level 1: 400 mcg LMB-1002

Reported measurements

Source class 1
Values in mcg/kg · Interval/dispersion: Not reported
GroupValueSpreadLowerUpperComment
All Participants in Dose Level 1: 400 mcg LMB-100NANot reportedNot reportedNot reportedThe RP2D was not determined because the study closed early due to lack of accrual.
Complete source fields
classes
  1. categories
    1. measurements
      1. comment
        The RP2D was not determined because the study closed early due to lack of accrual.
        group Id
        OG000
        value
        NA
denoms
  1. counts
    1. group Id
      OG000
      value
      2
    units
    Participants
description
RP2D is defined as the highest dose at which fewer than 2 of 6 participants experience a dose-limiting toxicity. A dose-limiting toxicity is defined as any Grade 4 hematological toxicity lasting greater than 5 days. Grade 3 febrile neutropenia, Grade 3 thrombocytopenia associated with bleeding episodes, any Grade 3 or greater, non-hematological toxicity with the following exceptions: tumor lysis syndrome, Grade 3 electrolyte changes associated with clinically significant consequences, Grade 3 nausea and diarrhea which has not received appropriate treatment, isolated Grade 3 fever occurring within 48 hours of LMB-100 infusion and resolving within 48 hours to ≤ Grade 2 and fully resolved within 1 week, alopecia, infusion-related reactions up to and including Grade 3, asymptomatic ≥ Grade 3 lymphopenia, leukopenia, hypoalbuminemia, electrolyte abnormalities resolving within 24 hours, and increase in alkaline phosphatase.
groups
  1. description
    All participants that received at least one dose of both LMB-100 and Ipilimumab. Dose Level 1: 400 mcg LMB-100 administered per dose, dose administered on days 1 and 4 of 21-day cycle, cycle 1 in participants with pleural or peritoneal mesothelioma. Those with pleural or peritoneal mesothelioma receiving intra-tumoral administration of LMB-100 + Ipilimumab for up to 4 cycles. For infusion related reactions precaution, all participants will be premedicated 30-60 minutes (+ 30 minutes) prior to each LMB-100 administration with the following medications: Diphenhydramine 25-50 mg by mouth (PO) or intravenous (IV) (or alternative antihistamine at adequate dose), Famotidine 20 mg by mouth (PO) or intravenous (IV) (or alternative histamine H2- receptor antagonists (H2) blocker at adequate dose), and Acetaminophen 650 mg by mouth (PO) or intravenous (IV). Additional infusion precaution at infusions of LMB-100 after Cycle 1 Day 1 (as appropriate): Dexamethasone 20 mg by mouth (PO), 6-12 hours prior to LMB-100 administration OR 10mg, intravenous (IV), 30-60 minutes prior to LMB-100 administration OR equivalent dose of another corticosteroid as clinically indicated.
    id
    OG000
    title
    All Participants in Dose Level 1: 400 mcg LMB-100
param Type
NUMBER
reporting Status
POSTED
time Frame
21 days after first LMB-100 administration
title
Recommended Phase 2 Dose (RP2D) of Intratumorally Administered LMB-100 in Participants With Mesothelioma
type
PRIMARY
unit Of Measure
mcg/kg

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Preserved source evidence · Not medical advice