Rhythm Pharmaceuticals, Inc. · NASDAQ:RYTM

Rhythm Pharmaceuticals — Conference Call: Interim results from Phase 2 trial in Hypothalamic Obesity (July 2022)

35 slides from Rhythm Pharmaceuticals's conference presentation, Jul 12, 2022

  1. Slide 1: Interim results from Phase 2 Clinical Trial Evaluating Setmelanotide in Hypothalamic Obesity

    Rhythm Pharmaceuticals Interim results from Phase 2 Clinical Trial Evaluating Setmelanotide in Hypothalamic Obesity July 12, 2022 ® CONFIDENTIAL

  2. Slide 2: Agenda

    • David Connolly Executive Director, Investor Relations and Corporate Communications • David Meeker, MD Agenda Chairman, President and CEO • M. Jennifer Abuzzahab, MD Pediatric Endocrinologist at Children's Minnesota • Hunter Smith Chief Financial Officer 2

  3. Slide 3: Forward Looking Statements

    Forward Looking Statements This presentation contains certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, and that involve risks and uncertainties, including without limitation statements regarding the potential, safety, efficacy, and regula

  4. Slide 4: David Meeker, MD

    David Meeker, MD Chairman, President and CEO Rhythm Pharmaceuticals 4

  5. Slide 5: First and only FDA-approved and EC-authorized therapy targeting a root cause of hyperphagia

    First and only FDA-approved and EC- authorized therapy that targets a root cause of hyperphagia and early-onset, severe obesity Launch for Bardet-Biedl Achieve market access Expand addressable syndrome (BBS) in U.S. throughout EU with patient population with underway EC authorization for BBS robust

  6. Slide 6: Hypothalamic Obesity: Severe Disease Burden with Significant Unmet Need

    Hypothalamic Obesity: Severe Disease Burden with Significant Unmet Need Established patient Biology of No effective treatment population actively hypothalamic obesity for rapid weight gain seeking and is tied to from injury to advocating for an melanocortin-4 hypothalamus effective therapy receptor

  7. Slide 7: Setmelanotide Achieved Proof of Concept in Interim Analysis of Hypothalamic Obesity Phase 2 Trial

    Setmelanotide Achieved Proof of Concept in Interim Analysis of Hypothalamic Obesity Phase 2 Trial Full analysis set population (n=11) 11 of 11 −17.2 patients achieved mean % change primary endpoint of >5% reduction in BMI in BMI over 16 weeks (P<0.0001) (SD, 9.0%) Interim analysis as of the data cut

  8. Slide 8: MC4R Pathway Biology is Clear and Strong

    MC4R Pathway Biology is Clear and Strong: Regulates Hunger, Caloric Intake, Energy Expenditure and, Consequently, Body Weight Setmelanotide can address MC4R pathway impairment contributing to early-onset, severe obesity POMC NEURON MC4R-EXPRESSING ALMS1 NEURON Leptin BBSx LEPR RAI1 SH2B1 MC4R  Appe

  9. Slide 9: Hypothalamic Obesity Represents a Significant U.S. Market Opportunity

    Hypothalamic Obesity Represents a Significant U.S. Market Opportunity 5,000 – 10,000* patients ~500* Estimated U.S. prevalence additional cases diagnosed in U.S. each year 2,500 - 7,500 >1,000 >1,500 HO related to HO related to HO related to craniopharyngioma astrocytoma other tumor types *To estima

  10. Slide 10: M. Jennifer Abuzzahab, MD

    M. Jennifer Abuzzahab, MD Pediatric Endocrinologist at Children's Minnesota 10

  11. Slide 11: Patient Journey with Hypothalamic Obesity

    Patient Journey with Hypothalamic Obesity • Damage to the ventromedial hypothalamic nucleus HO-related • Most often have craniopharyngioma, other suprasellar tumors, event related surgeries, or radiation1 Rapid weight gain, • Strongest increase in weight within the first 6-12 months following HO eve

  12. Slide 12: Hypothalamic Obesity: A Rare, Acquired Form of Obesity Following Injury to the Hypothalamic Region

    Hypothalamic Obesity: A Rare, Acquired Form of Obesity Following Injury to the Hypothalamic Region Craniopharyngioma and other suprasellar brain tumors and treatment - tumor resection surgery and radiation - is considered the most common cause MC4R pathway deficiency following injury to hypothalamic

  13. Slide 13: Damage to the Hypothalamus Can Impair MC4R Pathway Signaling

    Damage to the Hypothalamus Can Impair MC4R Pathway Signaling Leading to Hyperphagia, Decreased Energy Expenditure and Rapid-onset Obesity1-4 Hypothalamus Upstream Downstream Downstream AgRP neuron MC4R activity Low Normal LEPR AgRP Tumor Adipose Hyperphagia tissue PCSK1 MC4R Obesity MC4R neuron α-MS

  14. Slide 14: Patient case of M. Jennifer Abuzzahab, MD

    Patient case of M. Jennifer Abuzzahab, MD, Pediatric Endocrinologist, at Children's Minnesota 14

  15. Slide 15: Patient case of M. Jennifer Abuzzahab, MD

    Patient case of M. Jennifer Abuzzahab, MD, Pediatric Endocrinologist, at Children's Minnesota 15

  16. Slide 16: HO: Aggressive, Rapid Weight Gain follows Therapy for CP

    HO: Aggressive, Rapid Weight Gain follows Therapy for CP Weight for age 2 - 20 years old Boys BMI for age 2 - 20 years old Boys Tumor recurrence & radiation therapy Typical growth pattern of a patient with HO following CP therapy, with persistent weight gain. The first plotted point is diagnosis at

  17. Slide 17: HO: Aggressive, Rapid Weight Gain follows Therapy for CP

    HO: Aggressive, Rapid Weight Gain follows Therapy for CP Patient Case Study: Setmelanotide therapy achieved rapid, significant weight loss Setmelanotide GLP1 therapy therapy Patient case of M. Jennifer Abuzzahab, MD, Pediatric Endocrinologist, at Children's Minnesota 17

  18. Slide 18: Longitudinal Analysis of Patients with Childhood-onset Craniopharyngioma

    Longitudinal Analysis of Patients with Childhood-onset Craniopharyngioma Illustrates Impact of Hypothalamic Involvement in BMI Patients with CP with hypothalamic involvement develop significant increase in BMI standard deviation +0.80 +4.29 Median change Median change in BMI SD in BMI SD Patients wi

  19. Slide 19: No Effective Treatment Options for Hypothalamic Obesity

    No Effective Treatment Options for Hypothalamic Obesity Patients with HO No pharmaceutical Bariatric treatment Current are unresponsive agent for treatment with invasive , recommendations to lifestyle and has been approved nonreversible are limited to diet modifications by the FDA or methods in hypo

  20. Slide 20: David Meeker, MD

    David Meeker, MD Chairman, President and CEO Rhythm Pharmaceuticals 20

  21. Slide 21: Phase 2 Open-label Trial Designed to Evaluate Setmelanotide's Therapeutic Effect

    Phase 2 Open-label Trial Designed to Evaluate Setmelanotide’s Therapeutic Effect in Patients with Hypothalamic Obesity PATIENTS 6-16 YEARS OLD 1 mg 2 mg 3 mg setmelanotide Primary Screening PATIENTS 16- 40 YEARS OLD efficacy Open-label extension assessment 2 mg 3 mg setmelanotide 2-8 weeks 16 weeks

  22. Slide 22: Disposition of Patients Enrolled in Phase 2 Study

    Disposition of Patients Enrolled in Phase 2 Study All patients enrolled in Ph 2 study Today’s interim analysis Interim analysis set Enrolled Full analysis set (n=11) (N=18) Discontinued due to AE (n=2) Completed 16 weeks, Discontinued due but chose not to to AE (n=2) continue therapy (n=1) Withdrawa

  23. Slide 23: Interim Data Analysis is Based on Enrollment of 11 Patients

    Interim Data Analysis is Based on Enrollment of 11 Patients Baseline characteristic Total (n=11) Age, years Mean (SD) 14.6 (4.8) Range 6-23 <18 years old, n 9 ≥18 years old, n 2 Sex, n (%) Female / Male 5 (45.5) / 6 (54.5) Race, n (%) White 11 (100) Ethnicity, n (%) Hispanic or Latino 2 (18.2) Not H

  24. Slide 24: Setmelanotide Resulted in Mean BMI Reduction of -19.5% in 9 Completers at 16 Weeks

    Setmelanotide Resulted in Mean BMI Reduction of -19.5% in 9 Completers at 16 Weeks FAS population (n=11) Completers (n=9) −17.2 −19.5 mean % change mean % change in BMI over 16 weeks in BMI over 16 weeks (SD, 9.0%) (SD, 8.2%) −15.8 mean % change −17.8 mean % change in body weight after 16 weeks of i

  25. Slide 25: Clinically Meaningful Reductions Observed in All Patients by 16 Weeks

    Clinically Meaningful Reductions Observed in All Patients by 16 Weeks 0 -5 * ** −5% change -7.02 -8.18 -10 Mean % Change BMI -10.03 -10% change -15 -12.70 -12.79 -16.12 -20 -18.39 -21.10 -25 -22.73 -24.46 -30 -35 -37.19 -40 Interim analysis as of the data cutoff date of May 6, 2022; BMI, body mass i

  26. Slide 26: Setmelanotide Resulted in 17.8% Reduction in Body Weight at 16 Weeks

    Setmelanotide Resulted in 17.8% Reduction in Body Weight at 16 Weeks Baseline mean (SD) weight: 107.8 kg (29.9)/ 237.7 lb (65.9) Completers (n=9) 16-week mean (SD) weight: 90.0 kg (27.7)/ 198.4 lb (61.1) 0 Mean % (SD) weight change at 16 weeks: 17.8 (7.9) Mean weight reduction at 16 weeks: -17.8 kg

  27. Slide 27: Statistically Significant Reduction in BMI Z Score in All Patients <18 Years Old

    Setmelanotide Treatment Resulted in Statistically Significant Reduction in BMI Z Score in All Patients <18 Years Old −1.1 point mean change in BMI Z score 3.56 2.48 -30.2% Mean BMI Z Mean BMI Z Mean % after 16 weeks of at baseline at 16 weeks change in BMI setmelanotide Z at 16 weeks (n=9; SD, 1.24

  28. Slide 28: Meaningful Reduction in Most Hunger Score at 16 Weeks

    Setmelanotide Achieved Meaningful Reduction in “Most” Hunger Score at 16 Weeks in Patients with HO >12 years old 16 weeks on Change from Baseline (n=8) therapy (n=7) baseline Mean “Most” 7.18 4.55 -2.66 hunger (0-10) (5.4, 8.7) (1.0, 7.6) (-7.0, 0.4) (Min, Max) Interim analysis as of the data cutoff

  29. Slide 29: Safety and Tolerability Was Consistent With Setmelanotide Data

    Safety and Tolerability Was Consistent With Setmelanotide Data N=11 N=11 n (%) n (%) Treatment-related AEs 11 (100.0) Treatment-emergent AEs occurring in ≥20% of patients Serious AEs 2 (18.2) Nausea 7 (63.6) Serious treatment-related AEs 1 (9.1) Vomiting 5 (45.5) Treatment-related AEs leading to dru

  30. Slide 30: Disposition of 18 Patients Enrolled in Phase 2 Study

    Disposition of 18 Patients Enrolled in Phase 2 Study Enrolled (N=18) Discontinued due to AE (n=2) • Hyperpigmentation (wk 13) • Elevated liver enzymes (wk 8) Completed 16 weeks, but chose not to continue therapy (n=1) Withdrawal (n=1) • Non-compliance of therapy Continuing on setmelanotide therapy*

  31. Slide 31: Rhythm Advancing Setmelanotide towards Potential Registration for Hypothalamic Obesity

    Rhythm Advancing Setmelanotide towards Potential Registration for Hypothalamic Obesity Planning to End of Phase 2 Initiate Phase 3 present full data meeting with FDA trial in 1H2023 from 18 patients anticipated in to support in Phase 2 trial 2H2022 potential in Fall of 2022 registration 31

  32. Slide 32: Appendix

    Appendix Rhythm

  33. Slide 33: An Estimated 2,500 – 7,500 Patients Live with HO Related to Craniopharyngioma

    An Estimated 2,500 – 7,500 Patients Live with HO Related to Craniopharyngioma in the United States 325,719,1781 U.S. population, all ages, in 2020 ~600 3 5,000 – 15,000 2 Estimated U.S. incidence 1. US census. American Community Survey – DP05 ACS demographic estimates 2020; Estimate of based on pati

  34. Slide 34: An Estimated ~1,000 Patients Live with HO Related to Astrocytoma

    An Estimated ~1,000 Patients Live with HO Related to Astrocytoma 1 in the United States 82,519,0402 U.S. population, children 1. Includes pilocytic astrocytoma [incl. optic nerve glioma], diffuse astrocytoma, anaplastic astrocytoma, oligoastrocytic tumors, unique ~14,3003 ~1,1004 astrocytoma variant

  35. Slide 35: Rhythm Pharmaceuticals

    PHARMACEUTICALS

Rhythm Pharmaceuticals — Conference Call: Interim results from Phase 2 trial in Hypothalamic Obesity (July 2022) on 6ix