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Trial · NCT07570316

Registered outcomes21

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryPercentage of participants who are euthyroid (fT3, fT4, and TSH within normal ranges) off ATDs at week 24 in part AUp to 24 weeks (part A)Free triiodothyronine: \[fT3\]; free thyroxine: \[fT4\]; ATDs: antithyroid drugs
SecondaryTime to becoming euthyroid off ATDs in part AUp to 24 weeks (part A)ATDs: antithyroid drugs
SecondaryPercentage of participants who are euthyroid and receiving MMI ≤5 mg/day or CBZ ≤7.5 mg/day at week 24 in part AUp to 24 weeks (part A)MMI: methimazole (also known as thiamazole); CBZ: carbimazole.
SecondaryPercentage of participants with fT3 and fT4 levels below the ULN off ATDs at week 24 in part AUp to 24 weeks (part A)ULN : upper limit of normal; ATDs: antithyroid drugs.
SecondaryPercentage of participants who are euthyroid off ATDs and TRAb seronegative at week 24 in part AUp to 24 weeks (part A)TRAb: anti-TSHR autoantibodies; ATDs: antithyroid drugs.
SecondaryTime to becoming euthyroid off ATDs and TRAb seronegativeUp to 24 weeks (part A) + up to 135 weeksATDs: antithyroid drugs; TRAb: anti-TSHR autoantibodies.
SecondaryTime to becoming euthyroid and receiving an ATD dose of MMI ≤5 mg/day or CBZ ≤7.5 mg/day (part A)Up to 24 weeks (Part A)ATDs: antithyroid drugs; MMI: methimazole (also known as thiamazole); CBZ: carbimazole.
SecondaryTime to becoming euthyroidUp to 24 weeks (part A) + up to 135 weeks
SecondaryTime to having TSH within normal ranges among participants who have TSH lower than the LLN at baseline (part A)Up to 24 weeks (part A)TSH: thyroid-stimulating hormone; LLN: lower limit of normal.
SecondaryPercentage of participants who remain euthyroid without ATDsUp to 74 weeks (part B)ATDs: antithyroid drug
SecondaryPercentage of participants who remain euthyroid without ATDs and without efgartigimod PH20 SC PFS for 6, 12, and 18 monthsUp to 74 weeks (part B) + up to 135 weeksATDs: antithyroid drug
SecondaryPercentage of participants who remain euthyroid without ATDs and without efgartigimod PH20 SC PFSUp to 72 weeks (part C)ATDs: antithyroid drug
SecondaryIncidence of AEs and SAEsUp to 135 weeksAEs: adverse events ; SAEs: serious adverse events.
SecondaryChange in ThyPRO-39 over timeUp to 135 weeks
The Thyroid-Specific Patient-Reported Outcome Short Form (ThyPRO-39) 39 item version of the ThyPRO. Each item is related to a specific aspect of the participant's experience with their thyroid condition. Each item is scored on a 5-point Likert scale, and the scores are then transformed to a 0-to-100 scale. Higher scores indicate worse health status.
SecondaryChange in PROMIS-PF10a over timeUp to 135 weeks
The Patient-Reported Outcomes Measurement Information System Physical Function-10 item (PROMIS-PF10a) is a self-administered physical functioning assessment comprising 10 items that measure respondents' ability to perform common physical tasks. Scoring involves summing the numerical responses to each item; higher scores indicate better physical function.
SecondaryEfgartigimod serum concentrations over timeUp to 24 weeks (part A) + 72 weeks (part C)
SecondaryPercentage change from baseline in total IgG levels in serum over timeUp to 98 weeksIgG: immunoglobulin G
SecondaryPercentage change from baseline in TRAb serum levels over timeUp to 135 weeksTRAb: anti-TSHR autoantibodies.
SecondaryIncidence of ADA against efgartigimod in serumUp to 24 weeks (part A) + up to 135 weeksADA: antidrug antibody(ies)
SecondaryIncidence of antibodies against rHuPH20 in plasmaUp to 24 weeks (part A) + Up to 135 weeksrHuPH20: recombinant human hyaluronidase PH20

Source ClinicalTrials.govtrials-2026-11-12-0.4.0

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNone stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

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