Phase 2 Obesity Trial, Recruiting NCT06239116 Sponsor: Rhythm Pharmaceuticals, Inc. Condition: Obesity
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Phase 2 Obesity Trial, Recruiting

NCT06239116
Recruiting Phase 2

Who may be able to join

AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI

Who might be able to join this trial:

Parts A and B (Healthy volunteer portion):

  • Men and women aged 18–55 who are generally in good health at the time of screening
  • A body mass index (BMI) of 30 or higher (a measure of body weight relative to height)
  • Normal or medically unimportant results on health checks at screening
  • Willingness and ability to use a highly effective form of contraception throughout the study, as required by the study guidelines
  • Ability to understand English, communicate with the study team, and sign a consent form agreeing to take part

Part C (Hypothalamic obesity portion):

  • Men and women aged 12–65 who have been diagnosed with hypothalamic obesity (weight gain caused by damage to a part of the brain called the hypothalamus)
  • People who have a documented diagnosis of a brain tumour (such as craniopharyngioma) or other brain condition affecting the hypothalamus, and who have had surgery, chemotherapy, or radiation treatment involving the hypothalamus at least 6 months before screening — OR people who have a documented hypothalamus injury at least 6 months before screening that did not require surgery or radiation
  • Weight gain linked to the hypothalamic injury, and a BMI of 30 or higher for those aged 18 and over, or a BMI at or above the 95th percentile for their age and sex for those aged 12 to under 18
  • Willingness and ability to use a highly effective form of contraception throughout the study
  • Ability to communicate with the study team and sign a consent form; for those under 18, a parent or guardian must also provide consent, and the young person must provide their own agreement (assent)

Part D (Prader-Willi syndrome portion):

  • Men and women aged 12–65 with a confirmed diagnosis of Prader-Willi syndrome (a genetic condition affecting appetite and weight)
  • A BMI of 30 or higher for those aged 18 and over, or a BMI at or above the 95th percentile for their age and sex for those aged under 18, based on US CDC growth standards
  • Willingness and ability to meet the contraception requirements of the study

Who may not be able to join:

Parts A and B:

  • People with any significant abnormal results on health checks or physical examination at screening
  • People with a current or past significant medical condition affecting the kidneys, liver, lungs, digestive system, heart, urinary system, hormones, immune system, metabolism, nervous system, or blood
  • People whose obesity is caused by a genetic condition, a syndrome, or a hormonal disorder
  • People with a history of kidney transplant or severe kidney disease (end-stage renal disease)
  • People with a diagnosis of a severe psychiatric (mental health) disorder
  • People with a serious ongoing condition affecting the lungs, heart, metabolism, or cancer that could interfere with the trial
  • People who smoke cigarettes, or who are heavily dependent on caffeine, alcohol, or other substances, or who are unable or unwilling to avoid caffeine, alcohol, and related substances for 24 hours before and after study visits
  • People who have had surgery within the 60 days before screening
  • People who have taken part in another clinical trial involving an experimental drug or device within 3 months or 5 half-lives (whichever is longer) before the first trial dose
  • People who are pregnant, breastfeeding, or planning to become pregnant during the trial

Part C:

  • People who have a diagnosis of Prader-Willi syndrome or a condition called ROHHADNET (a rare syndrome involving rapid weight gain, breathing difficulties, and nervous system problems)
  • People aged 18 and over who have lost more than 2% of their body weight in the previous 3 months, or people aged 12 to under 18 who have had more than a 2% reduction in BMI — or anyone currently using anti-obesity medications
  • People who have had weight-loss (bariatric) surgery or a related procedure within the last 2 years
  • People with a severe psychiatric disorder, or any history of suicidal thoughts, attempts, or behaviour
  • People with a serious ongoing condition affecting the lungs, heart, metabolism, or cancer that could interfere with the trial
  • People with a history of kidney transplant or severe kidney disease
  • People who have taken part in another clinical trial involving an experimental drug or device within 3 months or 5 half-lives (whichever is longer) before the first trial dose, or who have previously taken part in a trial involving a drug called setmelanotide
  • People who are pregnant, breastfeeding, or planning to become pregnant during the trial
  • People whose obesity before the hypothalamic injury was caused by another genetic or syndrome-related condition (such as Bardet-Biedl syndrome or certain gene mutations affecting appetite regulation)

Part D:

  • People aged 18 and over who have lost more than 2% of their body weight in the previous 3 months, or people aged under 18 who have had more than a 2% reduction in BMI — or anyone currently using treatments for obesity or excessive appetite
  • People who have had weight-loss (bariatric) surgery or a related procedure within the last 6 months
  • People with a severe psychiatric disorder, or any history of suicidal thoughts, attempts, or behaviour
  • People with a serious ongoing condition affecting the lungs, heart, metabolism, or cancer that could interfere with the trial
  • People who are pregnant, breastfeeding, or planning to become pregnant during the trial

Important: Other eligibility criteria not listed here may also apply. Always verify eligibility with the trial site directly before applying.

Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.

This is a simplified plain English summary of the eligibility criteria. Full criteria are set by the trial investigators and may include additional requirements not shown here. Never self-exclude from a trial based on this summary. Contact the trial site directly to confirm your eligibility.
Last synced 12 July 2026
Phase 2: approximately ~30% of drugs entering this phase reach regulatory approval, based on published industry-wide historical data. This is not specific to this trial.
Phase success rates shown are historical industry-wide averages based on published data. They are not a prediction for this specific trial or your individual situation.

Contact this trial

Principal Investigator: David Meeker, Rhythm Pharmaceuticals, Inc.

Phone: (857) 264-4280

Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.

GP referral letter

Print a one-page summary to share with your doctor.

Trial details

Status
Recruiting
Phase
Phase 2
Sponsor
Rhythm Pharmaceuticals, Inc.
Registry
ClinicalTrials.gov
Start date
5 March 2024
Est. completion
1 November 2027

Where this trial is recruiting

🇺🇸 United States

Primary endpoints

Parts A, B, C, D: Safety and Tolerability Assessed by Number of Study Participants with Treatment-Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)

Can't join this trial?

Expanded access pathways

If this trial is not available to you, other access pathways may exist. In Australia, the TGA Special Access Scheme allows access to unapproved therapeutic goods for individual patients.

TGA Special Access Scheme information

Find other recruiting trials on ClinicalTrials.gov

Data last synced from ClinicalTrials.gov: 12 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.

Trial recruitment status can change without notice between our nightly data updates. Always contact the trial site directly to confirm current recruitment status before making any decisions or travel arrangements.

View original record on ClinicalTrials.gov