Study of RET Inhibitor TAS0953/HM06 in Patients With Advanced Solid Tumors With RET Gene Abnormalities

Trial statusRecruiting
Trial phasePhase 1, Phase 2
Trial typeInterventional
Biological sexAll
Age18+
SponsorTaiho Pharmaceutical Co., Ltd.

About this trial

Phase 1 and 2 trial to study the safety, pharmacokinetics, and efficacy of TAS0953/HM06 in patients with advanced solid tumors with RET gene abnormalities. Phase 1 aims to determine the Maximum Tolerated Dose (MTD) and identify the Recommended Phase 2 Dose (RP2D) to be used in phase 2.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Eastern Cooperative Oncology Group (ECOG) performance score of 0 or 1

Available RET-gene abnormalities determined on tissue biopsy or liquid biopsy. If deemed appropriate by the investigator, determination on a pleural cell block or cell pellet is also acceptable.

Adequate hematopoietic, hepatic and renal function

Advanced solid tumors

Disqualifiers

Investigational agents or anticancer therapy within 5 half-lives prior to the first dose of study drug

Major surgery (excluding placement of vascular access) within 4 weeks prior to the first dose of study drug or planned major surgery during the course of study treatment.

Whole Brain Radiotherapy within 14 days or other palliative radiotherapy within 7 days prior to the first dose of study drug, or persisting side effects of such therapy, in the opinion of the Investigator.

Clinically significant, uncontrolled, cardiovascular disease including myocardial infarction within 3 months prior to Day 1 of Cycle 1, unstable angina pectoris, significant valvular or pericardial disease, history of ventricular tachycardia, symptomatic Congestive Heart Failure (CHF) New York Heart Association (NYHA) class III-IV, and severe uncontrolled arterial hypertension, according to the Investigator's opinion.

Trial design

Design model

Sequential

Treatments tested in this trial

  • TAS0953/HM06

    Drug

    Phase 1: oral, starting dose 20mg twice a day, until recommended phase 2 dose, continuous daily dosing, cycles lasting 21 days

  • TAS0953/HM06

    Drug

    Phase 2: oral, recommended dose twice a day, continuous daily dosing, cycles lasting 21 days

Treatment groups

244 Participants
are divided into 2 treatment groups
Group A: TAS0953/HM06 Phase 1Experimental treatment 1 intervention
Group B: TAS0953/HM06 Phase 2Experimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Phase 1 (dose-escalation): Maximum Tolerated Dose (MTD)

Incidence rate and category of dose limiting toxicities (DLTs)

Time frame
At the end of Cycle 1 (each cycle is 21 days)
2

Phase 1 (dose-expansion): Recommended Phase 2 dose (RP2D)

Time frame
At the end of Cycle 1 (each cycle is 21 days), and at the end of every subsequent cycle (each cycle is 21 days) for approximately 10 months (or earlier if patient discontinues the study)
3

Phase 2: Objective Response Rate (ORR) by independent central review

Proportion of patients with confirmed complete response (CR) and or partial response (PR) according to RECIST 1.1 as assessed by independent central review

Time frame
Approximately every 6 weeks for 6 months, then every 9 weeks during treatment, 7 days after the last dose, and every 3 months after the last dose (up to an average of 2 years) in patients without progressive disease.

Secondary outcomes

1

Phase 1 (dose expansion): Objective Response Rate (ORR) by independent central review

Proportion of patients with confirmed complete response (CR) and or partial response (PR) according to RECIST 1.1 as assessed by independent central review

Time frame
Approximately every 6 weeks for 6 months, then every 9 weeks during treatment, 7 days after the last dose, and every 3 months after the last dose (up to an average of 2 years) in patients without progressive disease
2

Phase 2: ORR by Investigator

Proportion of patients with confirmed complete response (CR) and or partial response (PR) according to RECIST 1.1 as assessed by Investigator

Time frame
Approximately every 6 weeks for 6 months, then every 9 weeks during treatment, 7 days after the last dose, and every 3 months after the last dose (up to an average of 2 years) in patients without progressive disease
3

Phase 2: Disease Control Rate (DCR)

Proportion of patients with confirmed complete response (CR), partial response (PR) and Stable Disease according to RECIST 1.1 as assessed by Investigator

Time frame
Approximately every 6 weeks for 6 months, then every 9 weeks during treatment, 7 days after the last dose, and every 3 months after the last dose (up to an average of 2 years) in patients without progressive disease
4

Phase 2: Time to Tumor Response (TTR)

Time from first dose to first documentation of objective tumor response (CR or PR)

Time frame
From date of randomization until the date of first documentation of objective tumor response, assessed up to an average of 2 years.

Other outcomes

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