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NCT03037385 · CITED IN SOURCE DOCUMENTS

Phase 1/2 Study of the Highly-selective RET Inhibitor, Pralsetinib (BLU-667), in Participants With Thyroid Cancer, Non-Small Cell Lung Cancer, and Other Advanced Solid Tumors

An NCI or FDA source cites this study. A citation does not establish that it applies to an individual diagnosis.

Phase
PHASE1, PHASE2
Status at capture
COMPLETED
Registry last update
2025-05-31

This is a Phase 1/2, open-label, first-in-human (FIH) study designed to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary antineoplastic activity of pralsetinib (BLU-667) administered orally in participants with medullary thyroid cancer (MTC), RET-altered NSCLC and other RET-altered solid tumors.

Open the original ClinicalTrials.gov record → · Download preserved record

What did the study report?

Outcomes, safety and baseline populations are separate source sections. Quality-of-life measures appear under their original outcome titles.

flow

Participant flow

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baseline

Baseline characteristics

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outcome · POSTED

Phase 1 : Maximum Tolerated Dose (MTD) and Recommended Phase 2 Dose (RP2D) of Pralsetinib

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outcome · POSTED

Phase 1 and Phase 2: Number of Participants With AEs and Serious AEs (SAEs)

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outcome · POSTED

Phase 2: Overall Response Rate (ORR)

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outcome · POSTED

Phase 1: ORR

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outcome · POSTED

Phase 1 and Phase 2: ORR in RET-fusion Positive NSCLC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: ORR in RET-mutation MTC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: ORR in RET-fusion Positive TC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: Clinical Benefit Rate (CBR) in RET-fusion Positive NSCLC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: CBR in RET-mutation MTC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: CBR in RET-fusion Positive TC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: Disease Control Rate (DCR) in RET-fusion Positive NSCLC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: DCR in RET-mutation MTC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: DCR in RET-fusion Positive TC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: Duration of Response (DOR) in RET-mutation NSCLC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: DOR in RET-mutation MTC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 1 and Phase 2: DOR in RET-fusion Positive TC Participants With Specific RET Gene Status

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outcome · POSTED

Phase 2: DOR

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outcome · POSTED

Phase 2: CBR

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outcome · POSTED

Phase 2: DCR

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outcome · POSTED

Phase 2: Progression-free Survival (PFS)

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outcome · POSTED

Phase 2: Overall Survival (OS)

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outcome · POSTED

Phase 2: Intracranial ORR in RET-fusion Positive NSCLC Central Nervous System (CNS) Metastases Participants

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outcome · POSTED

Phase 2: Intracranial CBR in RET-fusion Positive NSCLC CNS Metastases Participants

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outcome · POSTED

Phase 2: Intracranial DCR in RET-fusion Positive NSCLC CNS Metastases Participants

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outcome · POSTED

Phase 2: Intracranial DOR in RET-fusion Positive NSCLC CNS Metastases Participants

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outcome · POSTED

Phase 1: Maximum Plasma Concentration (Cmax)

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outcome · POSTED

Phase 1: Time to Maximum Plasma Concentration (Tmax)

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outcome · POSTED

Phase 1: Time of Last Quantifiable Plasma Drug Concentration (Tlast)

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outcome · POSTED

Phase 1: Area Under the Plasma Concentration Versus Time Curve From Time 0 to 24 Hours Postdose (AUC0-24)

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outcome · POSTED

Phase 1: Plasma Drug Concentration at 24 Hours Postdose (C24hr)

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outcome · POSTED

Phase 1: Apparent Volume of Distribution (Vz/F)

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outcome · POSTED

Phase 1: Terminal Elimination Half-Life (t½)

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outcome · POSTED

Phase 1: Apparent Oral Clearance (CL/F)

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outcome · POSTED

Phase 1: Accumulation Ratio for Cmax (RCmax)

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outcome · POSTED

Phase 1: Accumulation Ratio for AUC (RAUC)

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outcome · POSTED

Phase 2: Cmax

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outcome · POSTED

Phase 2: Tmax

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outcome · POSTED

Phase 2: Tlast

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outcome · POSTED

Phase 2: AUC0-24

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outcome · POSTED

Phase 2: C24hr

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outcome · POSTED

Phase 2: t½

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outcome · POSTED

Phase 2: CL/F

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outcome · POSTED

Phase 1: Percent Change From Baseline in Dual Specificity Phosphatase 6 (DUSP6)

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outcome · POSTED

Phase 1: Percent Change From Baseline in Sprout Receptor Tyrosine Kinase Signaling Antagonist 4 (SPRY4)

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adverse events

Adverse events

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more info

Limitations, agreements, and source contact

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Who could take part
eligibility Criteria
Key Inclusion Criteria: * Diagnosis during dose escalation (Phase 1) - Pathologically documented, definitively diagnosed non-resectable advanced solid tumor. * All participants treated at doses \> 120 mg per day must have MTC, or a RET-altered solid tumor per local assessment of tumor tissue and/or blood. * Diagnosis during dose expansion (Phase 2) - All participants (with the exception of participants with MTC enrolled in Groups 3, 4, and 9) must have an oncogenic RET-rearrangement/fusion or mutation (excluding synonymous, frameshift, and nonsense mutations) solid tumor, as determined by local or central testing of tumor or circulating tumor nucleic acid in blood; as detailed below. * Group 1 - participants must have pathologically documented, definitively diagnosed locally advanced or metastatic NSCLC with a RET fusion previously treated with a platinum-based chemotherapy. * Group 2 - participants must have pathologically documented, definitively diagnosed locally advanced or metastatic NSCLC with a RET fusion not previously treated with a platinum-based chemotherapy, including those who have not had any systemic therapy. Prior platinum chemotherapy in the neoadjuvant and adjuvant setting is permitted if the last dose of platinum was 4 months or more before the first dose of study drug. * Group 3 - participants must have pathologically documented, definitively diagnosed advanced MTC that had progressed within 14 months prior to the Screening Visit and was previously treated with cabozantinib and/or vandetanib. * Group 4 - participants must have pathologically documented, definitively diagnosed advanced MTC that had progressed within 14 months prior to the Screening Visit and was not previously treated with cabozantinib and/or vandetanib. * Group 5 - participants must have a pathologically documented, definitively diagnosed advanced solid tumor with an oncogenic RET fusion, have previously received standard of care (SOC) appropriate for their tumor type (unless there is no accepted standard therapy for the tumor type or the Investigator has determined that treatment with standard therapy is not appropriate), and must not have been eligible for any of the other groups. * Group 6 - participants must have a pathologically documented, definitively diagnosed advanced solid tumor with an oncogenic RET fusion or mutation that was previously treated with a selective tyrosine kinase inhibitor (TKI) that inhibits RET * Group 7 - participants must have a pathologically documented, definitively diagnosed advanced solid tumor with an oncogenic RET mutation previously treated with SOC appropriate for the tumor type and not eligible for any of the other groups * Group 8 - participants must have pathologically documented, definitively diagnosed locally advanced or metastatic NSCLC with a RET fusion that was previously treated with a platinum based chemotherapy (China only). * Group 9 - participants must have pathologically documented, definitively diagnosed advanced MTC that had progressed within 14 months prior to the Screening Visit, and was not previously treated with systemic therapy (except prior cytotoxic chemotherapy is allowed) for advanced or metastatic disease (China only). * Participants must have non-resectable disease. * Dose expansion (Phase 2): Participants in all groups (except Group 7) must have measurable disease per RECIST v1.1 (or RANO, criteria if appropriate for tumor type). * Participants agrees to provide tumor tissue (archived, if available or a fresh biopsy) for RET status confirmation and is willing to consider an on-treatment tumor biopsy, if considered safe and medically feasible by the treating Investigator. For Phase 2, Group 6, participants are required to undergo a pretreatment biopsy to define baseline RET status in tumor tissue. * Participants has Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0-1. Key Exclusion Criteria: * Participant's cancer has a known primary driver alteration other than RET. For example, NSCLC with a targetable mutation in EGFR, ALK, ROS1 or BRAF; colorectal with an oncogenic KRAS, NRAS, or BRAF mutation. * Participants had any of the following within 14 days prior to the first dose of study drug: 1. Platelet count \< 75 × 10\^9/L. 2. Absolute neutrophil count \< 1.0 × 10\^9/L. 3. Hemoglobin \< 9.0 g/dL (red blood cell transfusion and erythropoietin may be used to reach at least 9.0 g/dL, but must have been administered at least 2 weeks prior to the first dose of study drug. 4. Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) \> 3 × the upper limit of normal (ULN) if no hepatic metastases are present; \> 5 × ULN if hepatic metastases are present. 5. Total bilirubin \> 1.5 × ULN; \> 3 × ULN with direct bilirubin \> 1.5 × ULN in presence of Gilbert's disease. 6. Estimated (Cockcroft-Gault formula) or measured creatinine clearance \< 40 mL/min. 7. Total serum phosphorus \> 5.5 mg/dL * QT interval corrected using Fridericia's formula (QTcF) \> 470 msec or history of prolonged QT syndrome or Torsades de pointes, or familial history of prolonged QT syndrome. * Clinically significant, uncontrolled, cardiovascular disease. * Central nervous system (CNS) metastases or a primary CNS tumor that is associated with progressive neurological symptoms. * Clinically symptomatic interstitial lung disease or interstitial pneumonitis including radiation pneumonitis * Participants in Groups 1-5 and 7 (Phase 2) previously treated with a selective RET inhibitor * Participant had a major surgical procedure within 14 days of the first dose of study drug * Participant had a history of another primary malignancy that had been diagnosed or required therapy within the a year prior to the study * Pregnant or breastfeeding female participants
healthy Volunteers
false
minimum Age
18 Years
sex
ALL
std Ages
  1. ADULT
  2. OLDER_ADULT
Treatment arms and interventions
arm Groups
  1. description
    Multiple doses of pralsetinib (BLU-667) for oral administration.
    intervention Names
    1. Drug: pralsetinib (BLU-667)
    label
    Phase 1 Dose Escalation
    type
    EXPERIMENTAL
  2. description
    Oral dose of pralsetinib (BLU-667) as determined during Dose Escalation.
    intervention Names
    1. Drug: pralsetinib (BLU-667)
    label
    Phase 2 Dose Expansion
    type
    EXPERIMENTAL
interventions
  1. arm Group Labels
    1. Phase 1 Dose Escalation
    2. Phase 2 Dose Expansion
    description
    pralsetinib (BLU-667) is a potent and selective inhibitor of the RET mutations, fusions, and predicted resistant mutants
    name
    pralsetinib (BLU-667)
    other Names
    1. BLU-667
    type
    DRUG
Study design
allocation
NON_RANDOMIZED
intervention Model
PARALLEL
intervention Model Description
Phase 1 (Complete): * Advanced MTC, NSCLC or other solid tumor * 30-600mg (PO QD or BID) Phase 2 (400mg QD): * Group 1: RET fusion NSCLC previously treated with a platinum chemotherapy * Group 2: RET fusion NSCLC not previously treated for metastatic disease * Group 3: MTC previously treated with cabozantinib and/or vandetanib * Group 4: MTC not previously treated with cabozantinib or vandetanib * Group 5: Other solid tumors with a RET fusion not eligible for any of the other groups and previously treated with SOC or have no acceptable SOC for their tumor type as determined by the investigator * Group 6: Any solid tumor with a RET alteration (fusion or mutation) previously treated with a selective RET Inhibitor * Group 7: Other solid tumors with a RET mutation previously treated with SOC * Group 8: RET fusion NSCLC previously treated with a platinum chemotherapy (China only) * Group 9: MTC not previously treated with systemic therapy for advanced or metastatic disease (China only)
masking Info
masking
NONE
primary Purpose
TREATMENT
Enrollment
count
590
type
ACTUAL
Registered outcome plans (not posted results)
primary Outcomes
  1. description
    MTD was defined as the highest tolerated dose of pralsetinib without causing dose limiting toxicities (DLTs). DLT was defined as any Grade ≥3 adverse event (AE) occurring during Cycle 1 during Phase 1 (dose escalation) that is not clearly caused by something other than pralsetinib. RP2D was defined as the highest dose with acceptable toxicity as determined from dose-escalation phase.
    measure
    Phase 1 : Maximum Tolerated Dose (MTD) and Recommended Phase 2 Dose (RP2D) of Pralsetinib
    time Frame
    Up to approximately 30.8 months
  2. description
    An AE was any untoward medical occurrence associated with the use of a drug in humans, whether or not considered drug related. An AE can be any unfavorable and unintended sign (e.g., an abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, without any judgment about causality. A SAE is any significant hazard, contraindication, side effect that is fatal or life-threatening, requires hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly or birth defect, is medically significant or requires intervention to prevent one or other of the outcomes listed above.
    measure
    Phase 1 and Phase 2: Number of Participants With AEs and Serious AEs (SAEs)
    time Frame
    From Cycle 1 Day 1 up to 30 days after the final dose of study drug (up to approximately 6.7 years)
  3. description
    ORR was defined as the percentage of participants with a confirmed complete response (CR) or partial response (PR) for at least two assessments with at least 28 days apart and no disease progression (PD) in between. Per Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1), CR was defined as the disappearance of all target lesions or any pathological lymph nodes (whether target or non-target) having a reduction in the short axis to \<10 millimeters (mm). PR was defined as at least a 30% decrease in the sum of diameters (SOD) of all target lesions, taking as reference the baseline SOD, in the absence of CR. PD was defined as at least a 20% increase in SOD of target lesions, taking as reference the smallest SOD on study (including baseline). ORR and its two-sided 95% CI, based on the exact binomial distribution (Clopper-Pearson), were presented.
    measure
    Phase 2: Overall Response Rate (ORR)
    time Frame
    Up to approximately 79.8 months
secondary Outcomes
  1. description
    ORR was defined as the percentage of participants with a confirmed CR or PR for at least two assessments with at least 28 days apart and no PD in between. Per RECIST v1.1, CR was defined as the disappearance of all target lesions or any pathological lymph nodes (whether target or non-target) having a reduction in the short axis to \<10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. PD was defined as at least a 20% increase in SOD of target lesions, taking as reference the smallest SOD on study (including baseline). ORR and its two-sided 95% CI, based on the exact binomial distribution (Clopper-Pearson), was presented.
    measure
    Phase 1: ORR
    time Frame
    Up to approximately 28 months
  2. description
    Oncogenic RET rearrangements have been identified in 1%-2% of NSCLC. These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., Kinesin family member 5B (KIF5B), coiled-coil domain containing 6 (CCDC6), nuclear receptor coactivator 4 (NCOA4)). RET genotypes were determined by local testing and/or central analysis of circulating tumor deoxyribonucleic acid (ctDNA). ORR was assessed in participants having specific RET rearrangements. ORR was defined as the percentage of participants with a confirmed CR or PR for at least 2 assessments with at least 28 days apart and no PD in between. CR, PR, and PD were defined per RECIST as outlined in the description for OM 3.
    measure
    Phase 1 and Phase 2: ORR in RET-fusion Positive NSCLC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
  3. description
    Oncogenic RET activation has been implicated as a driver in MTC. These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., M918T, cysteine rich domain, V804X). RET genotypes were determined by local testing and/or central analysis of ctDNA. ORR was assessed in participants having specific RET rearrangements. ORR was defined as the percentage of participants with a confirmed CR or PR for at least 2 assessments with at least 28 days apart and no PD in between. CR, PR, and PD were defined per RECIST as outlined in the description for OM 3.
    measure
    Phase 1 and Phase 2: ORR in RET-mutation MTC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
  4. description
    Oncogenic RET activation has been implicated as a driver in both MTC and differentiated TC (DTC). These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., KIF5B, CCDC6, NCOA4). RET genotypes were determined by local testing and/or central analysis of ctDNA. ORR was assessed in participants having specific RET rearrangements. ORR was defined as the percentage of participants with a confirmed CR or PR for at least 2 assessments with at least 28 days apart and no PD in between. CR, PR, and PD were defined per RECIST as outlined in the description for OM 3.
    measure
    Phase 1 and Phase 2: ORR in RET-fusion Positive TC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
  5. description
    Oncogenic RET rearrangements have been identified in 1%-2% of NSCLC. These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., KIF5B, CCDC6, NCOA4). RET genotypes were determined by local testing and/or central analysis of ctDNA. CBR was assessed in participants having specific RET rearrangements. CBR was defined as the percentage of participants with a confirmed CR or PR, or stable disease (SD) which has been lasting at least 16 weeks (i.e. 4 cycles if 28 days are in one cycle) from the first dose date. CR and PR were defined per RECIST as outlined in the description for OM 3. SD was defined as neither sufficient shrinkage to qualify for CR or PR nor sufficient increase to qualify for PD. PD was defined as at least a 20% increase in SOD of target lesions, taking as reference the smallest SOD on study (including baseline).
    measure
    Phase 1 and Phase 2: Clinical Benefit Rate (CBR) in RET-fusion Positive NSCLC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
  6. description
    Oncogenic RET activation has been implicated as a driver in MTC. These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., M918T, cysteine rich domain, V804X). RET genotypes were determined by local testing and/or central analysis of ctDNA. CBR was assessed in participants having specific RET rearrangements. CBR was defined as the percentage of participants with a confirmed CR or PR, or SD which has been lasting at least 16 weeks (i.e. 4 cycles if 28 days are in one cycle) from the first dose date. CR and PR were defined per RECIST as outlined in the description for OM 3. SD was defined as neither sufficient shrinkage to qualify for CR or PR nor sufficient increase to qualify for PD. PD was defined as at least a 20% increase in SOD of target lesions, taking as reference the smallest SOD on study (including baseline).
    measure
    Phase 1 and Phase 2: CBR in RET-mutation MTC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
  7. description
    Oncogenic RET activation has been implicated as a driver in both MTC and DTC. These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., KIF5B, CCDC6, NCOA4). RET genotypes were determined by local testing and/or central analysis of ctDNA. CBR was assessed in participants having specific RET rearrangements. CBR was defined as the percentage of participants with a confirmed CR or PR or SD which has been lasting at least 16 weeks (i.e. 4 cycles if 28 days are in one cycle) from the first dose date. CR and PR were defined per RECIST as outlined in the description for OM 3. SD was defined as neither sufficient shrinkage to qualify for CR or PR nor sufficient increase to qualify for PD. PD was defined as at least a 20% increase in SOD of target lesions, taking as reference the smallest SOD on study (including baseline).
    measure
    Phase 1 and Phase 2: CBR in RET-fusion Positive TC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
  8. description
    Oncogenic RET rearrangements have been identified in 1%-2% of NSCLC. These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., KIF5B, CCDC6, NCOA4). RET genotypes were determined by local testing and/or central analysis of ctDNA. DCR was assessed in participants having specific RET rearrangements. DCR was defined as the percentage of participants with a confirmed CR/PR, or SD. CR and PR were defined per RECIST as outlined in the description for OM 3. SD was defined as neither sufficient shrinkage to qualify for CR or PR nor sufficient increase to qualify for PD. PD was defined as at least a 20% increase in SOD of target lesions, taking as reference the smallest SOD on study (including baseline).
    measure
    Phase 1 and Phase 2: Disease Control Rate (DCR) in RET-fusion Positive NSCLC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
  9. description
    Oncogenic RET activation has been implicated as a driver in MTC. These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., M918T, cysteine rich domain, V804X). RET genotypes were determined by local testing and/or central analysis of ctDNA. DCR was assessed in participants having specific RET rearrangements. DCR was defined as the percentage of participants with a confirmed CR/PR, or SD. CR and PR were defined per RECIST as outlined in the description for OM 3. SD was defined as neither sufficient shrinkage to qualify for CR or PR nor sufficient increase to qualify for PD. PD was defined as at least a 20% increase in SOD of target lesions, taking as reference the smallest SOD on study (including baseline).
    measure
    Phase 1 and Phase 2: DCR in RET-mutation MTC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
  10. description
    Oncogenic RET activation has been implicated as a driver in both MTC and DTC. These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., KIF5B, CCDC6, NCOA4). RET genotypes were determined by local testing and/or central analysis of ctDNA. DCR was assessed in participants having specific RET rearrangements. DCR was defined as the percentage of participants with a confirmed CR/PR, or SD. CR and PR were defined per RECIST as outlined in the description for OM 3. SD was defined as neither sufficient shrinkage to qualify for CR or PR nor sufficient increase to qualify for PD. PD was defined as at least a 20% increase in SOD of target lesions, taking as reference the smallest SOD on study (including baseline).
    measure
    Phase 1 and Phase 2: DCR in RET-fusion Positive TC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
  11. description
    Oncogenic RET rearrangements have been identified in 1%-2% of NSCLC. These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., KIF5), CCDC6, NCOA4). RET genotypes were determined by local testing \&/or central analysis of circulating tumor deoxyribonucleic acid (ctDNA). DOR was assessed in participants having specific RET rearrangements. DOR=time from first documented CR/PR to date of first documented PD or death due to any cause, whichever occurs first. Per RECIST, CR=disappearance of all target lesions or any pathological lymph nodes (target or non-target) having a reduction in the short axis to \<10 mm. PR=at least a 30% decrease in SOD of all target lesions, taking as reference the baseline SOD, in absence of CR. PD=as at least a 20% increase in SOD of target lesions, taking as reference smallest SOD on study. DOR was analyzed using the Kaplan-Meier (KM) method.
    measure
    Phase 1 and Phase 2: Duration of Response (DOR) in RET-mutation NSCLC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
  12. description
    Oncogenic RET activation has been implicated as a driver in MTC. These rearrangements typically produce chimeric transcripts that encode a fusion protein consisting of the RET kinase domain coupled to a protein with a dimerization domain (e.g., M918T, cysteine rich domain, V804X). RET genotypes were determined by local testing and/or central analysis of ctDNA. DOR was assessed in participants having specific RET rearrangements. DOR=time from first documented CR/PR to date of first documented PD or death due to any cause, whichever occurs first. Per RECIST, CR= disappearance of all target lesions or any pathological lymph nodes (target or non-target) having a reduction in the short axis to \<10 mm. PR=at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in absence of CR. PD=as at least a 20% increase in SOD of target lesions, taking as reference smallest SOD on study (including baseline). DOR was analyzed using the Kaplan-Meier (KM) method.
    measure
    Phase 1 and Phase 2: DOR in RET-mutation MTC Participants With Specific RET Gene Status
    time Frame
    Up to approximately 79.8 months
Full study description
brief Summary
This is a Phase 1/2, open-label, first-in-human (FIH) study designed to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary antineoplastic activity of pralsetinib (BLU-667) administered orally in participants with medullary thyroid cancer (MTC), RET-altered NSCLC and other RET-altered solid tumors.
detailed Description
The study consists of 2 parts, a dose-escalation part (Phase 1) and an expansion part (Phase 2). Both parts will enroll participants with advanced non-resectable NSCLC, advanced non-resectable thyroid cancer and other advanced solid tumors that have progressed following standard systemic therapy, have not adequately responded to standard systemic therapy, or the participants must be intolerant to or the Investigator has determined that treatment with standard therapy is not appropriate, or there must be no accepted standard therapy for their disease.
Source references
references
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    type
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    pmid
    37282666
    type
    DERIVED
  7. citation
    Subbiah V, Cassier PA, Siena S, Garralda E, Paz-Ares L, Garrido P, Nadal E, Vuky J, Lopes G, Kalemkerian GP, Bowles DW, Seetharam M, Chang J, Zhang H, Green J, Zalutskaya A, Schuler M, Fan Y, Curigliano G. Pan-cancer efficacy of pralsetinib in patients with RET fusion-positive solid tumors from the phase 1/2 ARROW trial. Nat Med. 2022 Aug;28(8):1640-1645. doi: 10.1038/s41591-022-01931-y. Epub 2022 Aug 12.
    pmid
    35962206
    type
    DERIVED
  8. citation
    Popat S, Liu SV, Scheuer N, Hsu GG, Lockhart A, Ramagopalan SV, Griesinger F, Subbiah V. Addressing challenges with real-world synthetic control arms to demonstrate the comparative effectiveness of Pralsetinib in non-small cell lung cancer. Nat Commun. 2022 Jun 17;13(1):3500. doi: 10.1038/s41467-022-30908-1.
    pmid
    35715405
    type
    DERIVED
  9. citation
    Subbiah V, Hu MI, Wirth LJ, Schuler M, Mansfield AS, Curigliano G, Brose MS, Zhu VW, Leboulleux S, Bowles DW, Baik CS, Adkins D, Keam B, Matos I, Garralda E, Gainor JF, Lopes G, Lin CC, Godbert Y, Sarker D, Miller SG, Clifford C, Zhang H, Turner CD, Taylor MH. Pralsetinib for patients with advanced or metastatic RET-altered thyroid cancer (ARROW): a multi-cohort, open-label, registrational, phase 1/2 study. Lancet Diabetes Endocrinol. 2021 Aug;9(8):491-501. doi: 10.1016/S2213-8587(21)00120-0. Epub 2021 Jun 9.
    pmid
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  10. citation
    Gainor JF, Curigliano G, Kim DW, Lee DH, Besse B, Baik CS, Doebele RC, Cassier PA, Lopes G, Tan DSW, Garralda E, Paz-Ares LG, Cho BC, Gadgeel SM, Thomas M, Liu SV, Taylor MH, Mansfield AS, Zhu VW, Clifford C, Zhang H, Palmer M, Green J, Turner CD, Subbiah V. Pralsetinib for RET fusion-positive non-small-cell lung cancer (ARROW): a multi-cohort, open-label, phase 1/2 study. Lancet Oncol. 2021 Jul;22(7):959-969. doi: 10.1016/S1470-2045(21)00247-3. Epub 2021 Jun 9.
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        e efficacy of GAVRETO was evaluated in RET fusion-positive metastatic thyroid cancer patients in a multicenter, open-label, multi-cohort clinical trial (ARROW, NCT03037385). All patients with RET fusion-positive thyroid cancer were required to have disease progression following standard therapy, measurable disease by RECIST versi
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    Preserved source evidence · Not medical advice