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NCT04211337 · OUTCOME

Overall Response Rate (ORR): Percentage of Participants With Complete Response (CR) or Partial Response (PR) by BICR

A Study of Selpercatinib (LY3527723) in Participants With RET-Mutant Medullary Thyroid Cancer · Source last updated 2026-03-19

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

Measure
NUMBER
Unit
Percentage of Participants
Interval / dispersion
95% Confidence Interval
Time frame
Baseline through Disease Progression or Death Up to 39 Months

What was measured

ORR is defined as the number of participants who achieved the best overall response (BOR) of CR or PR divided by the total number of participants randomized to each treatment arm. ORR per RECIST 1.1 as assessed by BICR.

Analysis population: All randomized participants, even if a participant did not take the assigned treatment, did not receive the correct treatment, or otherwise did not follow the protocol.

Groups in this outcome

Selpercatinib (TRT A)

160 milligrams Selpercatinib administered orally (PO) twice daily (BID). Adolescent Dose: 92 mg/m2 BID (not to exceed 160 mg BID).

Cabozantinib or Vandetanib (TRT B)

140 mg Cabozantinib administered orally daily (QD) or 300 mg Vandetanib administered orally QD per physician choice. Cabozantinib Adolescent Dose: 40 mg/m2. Vandetanib Adolescent Dose: * 0.7 - \<0.9 - 100 mg every other day (QOD) * 0.9 - \<1.2 - 100 mg QD * 1.2 - \<1.6 - 7-day schedule 100 mg - 200 mg - 100 mg - 200 mg - 100 mg - 200 mg - 100 mg * ≥1.6 - 200 QD

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

Analysis denominator · Participants

GroupSource count
Selpercatinib (TRT A)193
Cabozantinib or Vandetanib (TRT B)98

Reported measurements

Source class 1
Values in Percentage of Participants · Interval/dispersion: 95% Confidence Interval
GroupValueSpreadLowerUpperComment
Selpercatinib (TRT A)69.4Not reported62.475.8Not reported
Cabozantinib or Vandetanib (TRT B)38.8Not reported29.149.2Not reported

Source statistical analyses

Group order, estimate direction, methods and comments are retained. No treatment ranking is inferred.

  1. ci Lower Limit
    2.2
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    6.3
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <0.0001
    p Value Comment
    Stratified by RET mutation type (M918T vs. Others) and intended treatment if randomized to Arm B (Vandetanib vs. Cabozantinib)
    param Type
    Odds Ratio (OR)
    param Value
    3.7
    statistical Method
    Clopper-Pearson method
Complete source fields
analyses
  1. ci Lower Limit
    2.2
    ci Num Sides
    TWO_SIDED
    ci Pct Value
    95
    ci Upper Limit
    6.3
    group Ids
    1. OG000
    2. OG001
    non Inferiority Type
    SUPERIORITY
    p Value
    <0.0001
    p Value Comment
    Stratified by RET mutation type (M918T vs. Others) and intended treatment if randomized to Arm B (Vandetanib vs. Cabozantinib)
    param Type
    Odds Ratio (OR)
    param Value
    3.7
    statistical Method
    Clopper-Pearson method
classes
  1. categories
    1. measurements
      1. group Id
        OG000
        lower Limit
        62.4
        upper Limit
        75.8
        value
        69.4
      2. group Id
        OG001
        lower Limit
        29.1
        upper Limit
        49.2
        value
        38.8
denoms
  1. counts
    1. group Id
      OG000
      value
      193
    2. group Id
      OG001
      value
      98
    units
    Participants
description
ORR is defined as the number of participants who achieved the best overall response (BOR) of CR or PR divided by the total number of participants randomized to each treatment arm. ORR per RECIST 1.1 as assessed by BICR.
dispersion Type
95% Confidence Interval
groups
  1. description
    160 milligrams Selpercatinib administered orally (PO) twice daily (BID). Adolescent Dose: 92 mg/m2 BID (not to exceed 160 mg BID).
    id
    OG000
    title
    Selpercatinib (TRT A)
  2. description
    140 mg Cabozantinib administered orally daily (QD) or 300 mg Vandetanib administered orally QD per physician choice. Cabozantinib Adolescent Dose: 40 mg/m2. Vandetanib Adolescent Dose: * 0.7 - \<0.9 - 100 mg every other day (QOD) * 0.9 - \<1.2 - 100 mg QD * 1.2 - \<1.6 - 7-day schedule 100 mg - 200 mg - 100 mg - 200 mg - 100 mg - 200 mg - 100 mg * ≥1.6 - 200 QD
    id
    OG001
    title
    Cabozantinib or Vandetanib (TRT B)
param Type
NUMBER
population Description
All randomized participants, even if a participant did not take the assigned treatment, did not receive the correct treatment, or otherwise did not follow the protocol.
reporting Status
POSTED
time Frame
Baseline through Disease Progression or Death Up to 39 Months
title
Overall Response Rate (ORR): Percentage of Participants With Complete Response (CR) or Partial Response (PR) by BICR
type
SECONDARY
unit Of Measure
Percentage of Participants

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Preserved source evidence · Not medical advice