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Children's Hospital Colorado | Pediatric Infectious Disease

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A Study of Repotrectinib in Pediatric and Young Adult Subjects Harboring ALK, ROS1, OR NTRK1-3 Alterations

Turning Point Therapeutics logo

Turning Point Therapeutics

Status and phase

Enrolling
Phase 2
Phase 1

Conditions

Locally Advanced Solid Tumors
Primary CNS Tumors
Lymphoma
Metastatic Solid Tumors

Treatments

Drug: Oral repotrectinib (TPX-0005)

Study type

Interventional

Funder types

Industry

Identifiers

NCT04094610
CA127-1029 (Other Identifier)
TPX-0005-07

Details and patient eligibility

About

Phase 1 will evaluate the safety and tolerability at different dose levels of repotrectinib in pediatric and young adult subjects with advanced or metastatic malignancies harboring anaplastic lymphoma kinase (ALK), receptor tyrosine kinase encoded by the gene ROS1 (ROS1), or neurotrophic receptor kinase genes encoding TRK kinase family (NTRK1-3) alterations to estimate the Maximum Tolerated Dose (MTD) or Maximum Administered Dose (MAD) and select the Pediatric Recommended Phase 2 Dose (RP2D).

Phase 2 will determine the anti-tumor activity of repotrectinib in pediatric and young adult subjects with advanced or metastatic malignancies harboring ROS1 or NTRK1-3 alterations.

Full description

Enrollment of subjects into Phase 1 will proceed concurrently by age as follows:

Subjects <12 years old will initially be enrolled in the Phase 1 part to determine the pediatric RP2D for this age group; once the pediatric RP2D is determined, subjects age <12 years old may be enrolled into the Phase 2 part of the study. Subjects 12 to 25 years old will be directly enrolled into the Phase 2 part concurrent with Phase 1 enrollment.

Phase 1:

Approximately 12 pediatric subjects with locally advanced or metastatic solid tumors, including a primary central nervous system (CNS) tumor, or anaplastic large cell lymphoma (ALCL), with disease progression or who are non-responsive or intolerant to available therapies and for which no standard or available curative therapy exists.

Phase 2:

Subjects will be enrolled in one of 3 cohorts as follows:

Cohort 1: approximately 10-20 subjects with solid tumors characterized by NTRK fusion, TRK tyrosine kinase inhibitor (TKI)-naïve, and centrally confirmed measurable disease at baseline.

Cohort 2: approximately 23 subjects with solid tumors characterized by NTRK fusion, TRK TKI-pretreated, and centrally confirmed measurable disease at baseline.

Cohort 3: approximately 20 subjects with solid tumors or ALCL characterized by other ALK/ROS1/NTRK alterations or NTRK fusions without centrally confirmed measurable disease not otherwise eligible for Cohort 1 or 2. As of the current protocol amendment, only patients with ROS1 alterations will be enrolled to this cohort.

Enrollment

75 estimated patients

Sex

All

Ages

Under 25 years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

Key Inclusion Criteria:

  1. Documented genetic ROS1 point mutation, fusion, or amplification or NTRK1-3 fusion as identified by local testing in a Clinical Laboratory Improvement Amendments (CLIA) laboratory in the US or equivalently accredited diagnostic lab outside the United States (US) is required.
  2. Phase 1: Age <12 years; Phase 2: Age 12- 25 years
  3. Prior cytotoxic chemotherapy is allowed.
  4. Prior immunotherapy is allowed.
  5. Resolution of all acute toxic effects (excluding alopecia) of any prior anti-cancer therapy to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) Version 4.03 Grade less than or equal to 1.
  6. All subjects must have measurable disease by RECIST v1.1 or Response Assessment in Neuro-Oncology (RANO) criteria at time of enrollment.
  7. Subjects with a primary CNS tumor or CNS metastases must be neurologically stable on a stable or decreasing dose of steroids for at least 7 days prior to enrollment.
  8. Subjects must have a Lansky (< 16 years) or Karnofsky (≥ 16 years) score of at least 50.
  9. Life expectancy greater than or equal to 12 weeks, in the investigator's opinion.
  10. Adequate hematologic, renal and hepatic function.

Phase 2 Inclusion Criteria:

  1. Cohort Specific Inclusion Criteria:

    • Cohort 1: Subjects with NTRK fusion gene positive (NTRK+) advanced solid tumors (including primary CNS tumors), that are tropomyosin receptor kinase (TRK) TKI naïve;
    • Cohort 2: subjects with NTRK+ advanced solid tumors (including primary CNS tumors), that are TRK TKI pre-treated;
    • Cohort 3: subjects with advanced solid tumors with ROS1 gene fusions or other ROS1 aberrations (including amplifications and point mutations) with measurable disease.
  2. Subjects in Cohorts 1 and 2 must have prospectively confirmed measurable disease by BICR prior to enrollment.

Key Exclusion Criteria (Phase 1 and Phase 2):

  1. Subjects with neuroblastoma with only bone marrow disease evaluable by bone marrow aspiration only.

  2. Major surgery within 14 days (2 weeks) of start of repotrectinib treatment. Central venous access (Broviac, Mediport, etc.) placement does not meet criteria for major surgery.

  3. Known active infections requiring ongoing treatment (bacterial, fungal, viral including HIV positivity).

  4. Gastrointestinal disease (e.g., Crohn's disease, ulcerative colitis, or short gut syndrome) or other malabsorption syndromes that would impact drug absorption.

  5. Any of the following cardiac criteria:

    • Mean resting corrected QT interval (ECG interval measured from the onset of the QRS complex to the end of the T wave) for heart rate (QTc) > 480 msec obtained from three ECGs, using the screening clinic ECG machine-derived QTc value
    • Any clinically important abnormalities in rhythm, conduction, or morphology of resting ECG (e.g., complete left bundle branch block, third degree heart block, second degree heart block, PR interval > 250 msec)
    • Any factors that increase the risk of QTc prolongation or risk of arrhythmic events such as heart failure, congenital long QT syndrome, family history of long QT syndrome, or any concomitant medication known to prolong the QT interval
  6. Peripheral neuropathy of CTCAE ≥grade 2.

  7. Subjects being treated with or anticipating the need for treatment with strong CYP3A4 inhibitors or inducers.

  8. Any potential allergies to repotrectinib and/or its excipients.

Trial design

Primary purpose

Treatment

Allocation

N/A

Interventional model

Single Group Assignment

Masking

None (Open label)

75 participants in 1 patient group

Repotrectinib (TPX-0005)
Experimental group
Description:
Phase 1 Oral repotrectinib (TPX-0005): Safety and tolerability at different dose levels Phase 2 Oral repotrectinib (TPX-0005): 3 cohorts Cohort 1: TKI-naive NTRK fusion Cohort 2: Prior TKI NTRK fusion Cohort 3: ROS1 gene fusions or other ROS1 aberrations
Treatment:
Drug: Oral repotrectinib (TPX-0005)

Trial contacts and locations

62

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Central trial contact

First line of the email MUST contain the NCT# and Site #.; BMS Study Connect Contact Center www.BMSStudyConnect.com

Data sourced from clinicaltrials.gov

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