Significant improvements in weight and hunger for children1

Weight Results

In patients 4 years and older

IMCIVREE delivered rapid, significant, and sustained weight loss1,2

142 patients participated in the Phase 3, double-blind, multicenter, placebo-controlled pivotal trial of IMCIVREE in acquired HO (IMCIVREE, n=94; placebo, n=48)1

Primary Endpoint: BMI Mean Percent Change From Baseline by Treatment Group (N=142)1*

BMI percent change over 56 weeks comparing IMCIVREE and placebo treatment groups showing greater BMI reduction with IMCIVREE
There was a 15.8% mean reduction in BMI with IMCIVREE, compared with a 2.6% mean increase with placebo. This means a placebo-adjusted 18.4% at 52 weeks on a therapeutic dose.

18.4% placebo-adjusted reduction in BMI

at 52 weeks on a therapeutic dose*

15.8% mean reduction for IMCIVREE vs 2.6% mean increase for placebo (p<0.0001)1

  • 18.2% placebo-adjusted reduction in BMI for patients 4 to <18 years old (n=76; 15.3% mean reduction for IMCIVREE vs 3.0% mean increase for placebo)2
  • 18.8% placebo-adjusted reduction in BMI for patients 18 years and older (n=66; 16.6% mean reduction for IMCIVREE vs 2.2% mean increase for placebo)2

*IMCIVREE=94; placebo=48. LSM difference (95% CI: −21.9, −14.9).

Tape measure icon

15.2-cm placebo-adjusted reduction in waist circumference, indicative of reduced adiposity2,3

  • Mean reduction of 12.0 cm in waist circumference for IMCIVREE vs mean increase of 3.2 cm for placebo at 52 weeks (N=142)
  • Waist circumference is a validated surrogate marker for excess adiposity
  • This endpoint was not included in the statistical testing hierarchy and was not controlled for multiplicity

IMCIVREE=94; placebo=48.

In patients 4 to <18 years old

IMCIVREE improved weight trajectory and helped pediatric patients achieve a healthier weight class2

Representative Weight Trajectory for a Pediatric Patient With Acquired HO Before and After IMCIVREE2

Representative BMI growth chart for a pediatric patient with acquired hypothalamic obesity before and after starting IMCIVREE, showing a reduction from 132% to 106% of the 95th percentile after 1 year of treatment
The mean reduction in the BMI percent of the 95th percentile for pediatric patients taking IMCIVREE in the trial was 26 points. This means after 1 year of IMCIVREE treatment, this representative patient would go from being classified as having severe obesity class II to obesity class I.

26-point mean reduction

in the BMI percent of the 95th percentile for IMCIVREE

vs 0.6-point mean reduction for placebo2

43% (20/46) of pediatric patients achieved a BMI <95th percentile with IMCIVREE, below the threshold for obesity.2

This chart applies mean trial data to a representative BMI trajectory in acquired HO to show what a pediatric patient taking IMCIVREE may experience after 1 year. BMI at the start of IMCIVREE treatment and after 1 year with IMCIVREE reflect mean values for pediatric patients in the Phase 3 trial. This growth chart is for illustrative purposes only.2

Changes in Weight Classification for Patients 4 to <18 Years Old With IMCIVREE2‡

Green down arrow icon9%

9% (4/46) reduced by 3
weight classes

Green down arrow icon35%

35% (16/46) reduced by 2
weight classes

Green down arrow icon26%

26% (12/46) reduced by 1
weight class

Weight Classes Based on BMI Percentile:

Obesity class III: ≥140% of the 95th percentile

Obesity class II: ≥120% to <140% of the 95th percentile

Obesity class I: ≥95th percentile to <120% of the 95th percentile

Overweight: ≥85th percentile to <95th percentile

Healthy weight: ≥5th percentile to <85th percentile

Baseline and observed Primary Timepoint values utilized for comparison. Three IMCIVREE patients did not have an observed Primary Timepoint Value indicated and are not included in the analysis. Thirteen patients were in the same weight class between Baseline and the Primary Timepoint. One patient increased a weight class.2


Hunger Results

In patients 12 years and older

IMCIVREE delivered significant hunger reduction1

Key Secondary Endpoint: Hunger Mean Change From Baseline by Treatment Group in Patients ≥12 Years (n=110)

Line graph comparing mean change in daily most hunger score over 56 weeks in patients 12 years and older treated with IMCIVREE versus placebo, showing a greater reduction in hunger with IMCIVREE
Patients 12 years and older experienced a 2.3-point mean reduction in daily most hunger score for IMCIVREE compared with 1.4-point mean reduction in daily most hunger score for placebo.

2.3-point mean reduction

in daily most hunger score for IMCIVREE

vs 1.4-point mean reduction for placebo (p=0.04).1||

§IMCIVREE=74; placebo=36. Patients 12 years and older who were able to self-report their hunger recorded their maximal hunger ("most hunger") each day on an 11-point scale from 0 ("not hungry at all") to 10 ("hungriest possible").

||LSM difference: −0.8 (95% CI: −1.62, −0.02).

Impact on symptoms of hyperphagia

Patients 12 years and older who were able to self-report were also administered the Symptoms of Hyperphagia questionnaire. Based on their responses, the Symptoms of Hyperphagia Composite Score decreased from baseline to 52 weeks.2

Formal validation has not been completed for the instrument used to measure symptoms of hyperphagia in the acquired HO population. This endpoint was not powered for formal testing or significance.


Additional efficacy measures for pediatric patients

Cardiometabolic icon

Cardiometabolic parameters

Data icon

Weight-related quality of life

Because she's not constantly stressing over food and when her next meal will be and what she can eat and how much she can eat, she's not in distress constantly.

– Caregiver of a patient on IMCIVREE

She is glad that she’s losing weight and is enjoying these moments with friends and family.

– Caregiver of a patient on IMCIVREE

Individual results may vary.

Get your patient started with IMCIVREE.

See efficacy data for IMCIVREE in adults.

BL=baseline, BMI=body mass index, CI=confidence interval, cm=centimeter, HO=hypothalamic obesity, kg=kilogram, m=meter.

Indication

IMCIVREE is indicated to reduce excess body weight and maintain weight reduction long term in adults and pediatric patients aged 4 years and older with acquired hypothalamic obesity (HO).

Limitations of Use

IMCIVREE is not indicated for the treatment of patients with the following conditions as IMCIVREE would not be expected to be effective:

  • Other types of obesity not related to acquired hypothalamic obesity or other FDA-approved indications for IMCIVREE, including obesity associated with other genetic syndromes and general (polygenic) obesity

Important Safety Information

Contraindications

Prior serious hypersensitivity to setmelanotide or any of the excipients in IMCIVREE. Serious hypersensitivity reactions (e.g., anaphylaxis) have been reported.

Warnings and Precautions

Disturbance in Sexual Arousal: Spontaneous penile erections and increased frequency of penile erections in males have occurred. Inform patients that these events may occur and instruct patients who have an erection lasting longer than 4 hours to seek emergency medical attention.

Depression and Suicidal Ideation: Depression and suicidal ideation have occurred. Monitor patients for new onset or worsening depression or suicidal thoughts or behaviors. Consider discontinuing IMCIVREE if patients experience suicidal thoughts or behaviors, or clinically significant or persistent depression symptoms occur.

Hypersensitivity Reactions: Serious hypersensitivity reactions (e.g., anaphylaxis) have been reported. If suspected, advise patients to promptly seek medical attention and discontinue IMCIVREE.

Skin Hyperpigmentation, Darkening of Pre-existing Nevi, and Development of New Melanocytic Nevi: Generalized or focal increases in skin pigmentation occurred in the majority of IMCIVREE-treated patients. IMCIVREE may also cause development of new melanocytic nevi or darkening of pre-existing nevi. Perform a full body skin examination prior to initiation and periodically during treatment to monitor pre-existing and new pigmented lesions.

Acute Adrenal Insufficiency with Acquired HO: Patients with acquired HO and secondary adrenal insufficiency reported serious adverse reactions related to acute adrenal insufficiency in 5% of IMCIVREE-treated patients and no placebo-treated patients. In patients with secondary adrenal insufficiency, monitor for clinical signs of acute adrenal insufficiency.

Sodium Imbalance in Patients with Acquired HO and Central Diabetes Insipidus: Patients with acquired HO and concomitant central diabetes insipidus (DI)/arginine vasopressin (AVP) deficiency reported hyponatremia in 6% of IMCIVREE-treated patients and 2% of placebo-treated patients and hypernatremia in 5% of IMCIVREE-treated patients and 4% of placebo-treated patients. Monitor serum sodium levels with changes in fluid intake and hydration status. Adjust the doses of concomitant therapies for DI/AVP deficiency as needed.

Adverse Reactions

  • Most common adverse reactions (incidence ≥20%) included skin hyperpigmentation, nausea, vomiting, and headache

Use in Specific Populations

Treatment with IMCIVREE is not recommended when breastfeeding. Discontinue IMCIVREE when pregnancy is recognized unless the benefits of therapy outweigh the potential risks to the fetus.

Please see full Prescribing Information for additional Important Safety Information.

References: 1. IMCIVREE [prescribing information]. Boston, MA. Rhythm Pharmaceuticals, Inc., 2026. 2. Data on file. Rhythm Pharmaceuticals, Inc. Boston, MA. 3. Ross R, Neeland IJ, Yamashita S, et al. Waist circumference as a vital sign in clinical practice: a Consensus Statement from the IAS and ICCR Working Group on Visceral Obesity. Nat Rev Endocrinol. 2020;16(3):177-189. doi:10.1038/s41574-019-0310-7

Indication and Important Safety Information

Indication

IMCIVREE is indicated to reduce excess body weight and maintain weight reduction long term in adults and pediatric patients aged 4 years and older with acquired hypothalamic obesity (HO).

Limitations of Use

IMCIVREE is not indicated for the treatment of patients with the following conditions as IMCIVREE would not be expected to be effective:

  • Other types of obesity not related to acquired hypothalamic obesity or other FDA-approved indications for IMCIVREE, including obesity associated with other genetic syndromes and general (polygenic) obesity

Important Safety Information

Contraindications

Prior serious hypersensitivity to setmelanotide or any of the excipients in IMCIVREE. Serious hypersensitivity reactions (e.g., anaphylaxis) have been reported.

Warnings and Precautions

Disturbance in Sexual Arousal: Spontaneous penile erections and increased frequency of penile erections in males have occurred. Inform patients that these events may occur and instruct patients who have an erection lasting longer than 4 hours to seek emergency medical attention.

Depression and Suicidal Ideation: Depression and suicidal ideation have occurred. Monitor patients for new onset or worsening depression or suicidal thoughts or behaviors. Consider discontinuing IMCIVREE if patients experience suicidal thoughts or behaviors, or clinically significant or persistent depression symptoms occur.

Hypersensitivity Reactions: Serious hypersensitivity reactions (e.g., anaphylaxis) have been reported. If suspected, advise patients to promptly seek medical attention and discontinue IMCIVREE.

Skin Hyperpigmentation, Darkening of Pre-existing Nevi, and Development of New Melanocytic Nevi: Generalized or focal increases in skin pigmentation occurred in the majority of IMCIVREE-treated patients. IMCIVREE may also cause development of new melanocytic nevi or darkening of pre-existing nevi. Perform a full body skin examination prior to initiation and periodically during treatment to monitor pre-existing and new pigmented lesions.

Acute Adrenal Insufficiency with Acquired HO: Patients with acquired HO and secondary adrenal insufficiency reported serious adverse reactions related to acute adrenal insufficiency in 5% of IMCIVREE-treated patients and no placebo-treated patients. In patients with secondary adrenal insufficiency, monitor for clinical signs of acute adrenal insufficiency.

Sodium Imbalance in Patients with Acquired HO and Central Diabetes Insipidus: Patients with acquired HO and concomitant central diabetes insipidus (DI)/arginine vasopressin (AVP) deficiency reported hyponatremia in 6% of IMCIVREE-treated patients and 2% of placebo-treated patients and hypernatremia in 5% of IMCIVREE-treated patients and 4% of placebo-treated patients. Monitor serum sodium levels with changes in fluid intake and hydration status. Adjust the doses of concomitant therapies for DI/AVP deficiency as needed.

Adverse Reactions

  • Most common adverse reactions (incidence ≥20%) included skin hyperpigmentation, nausea, vomiting, and headache

Use in Specific Populations

Treatment with IMCIVREE is not recommended when breastfeeding. Discontinue IMCIVREE when pregnancy is recognized unless the benefits of therapy outweigh the potential risks to the fetus.

Please see full Prescribing Information for additional Important Safety Information.

References:1. IMCIVREE [prescribing information]. Boston, MA. Rhythm Pharmaceuticals, Inc., 2026.2. Data on file. Rhythm Pharmaceuticals, Inc. Boston, MA.3. Ross R, Neeland IJ, Yamashita S, et al. Waist circumference as a vital sign in clinical practice: a Consensus Statement from the IAS and ICCR Working Group on Visceral Obesity. Nat Rev Endocrinol. 2020;16(3):177-189. doi:10.1038/s41574-019-0310-7