Studies

VALOR-HCM1, 11

CAMZYOS (mavacamten) was compared with placebo in patients with symptomatic obstructive HCM who met guideline criteria (American (ACC/AHA) 2011 or European (ESC) 2014) or were actively considering undergoing an invasive procedure in the past 12 months.1

VALOR-HCM: A phase 3 trial evaluating the efficacy and safety of CAMZYOS® in SRT-eligible patients

A multicenter, randomized, double-blind, placebo-controlled trial evaluating CAMZYOS in patients with severely symptomatic obstructive HCM who were guideline eligible for SRT1,10

Study design with dose titration regimen

Study design with dose titration regimen

Key endpoints: Primary composite and secondary endpoints1,10

Primary composite endpoint | Secondary endpoints

CAMZYOS® significantly reduced the proportion of patients who proceeded with or remained guideline eligible for SRT vs placebo1,10

SRT eligibility at Week 16*

CAMZYOS® significantly improved post-exercise LVOT gradient vs placebo1,10

Change in mean post-exercise LVOT gradient from baseline to Week 16

Significantly more patients showed an improvement in symptom control (≥1 NYHA class) with CAMZYOS® vs placebo1,10

Proportion of patients who improved NYHA score by ≥1 class from baseline to Week 16

The safety profile for CAMZYOS® was similar for EXPLORER-HCM and VALOR-HCM, with no patients permanently discontinuing treatment due to LVEF <50%1

Most commonly reported adverse reactions with CAMZYOS®

Nervous system disorders | Cardiac disorders | Respiratory, thoracic, and mediastinal disorders

1.     CAMZYOS®, Product Information current edition
2.     Olivotto I, Oreziak A, Barriales-Villa R, et al. Mavacamten for treatment of symptomatic obstructive hypertrophic cardiomyopathy (EXPLORERHCM): a randomised, double-blind, placebo-controlled, phase 3 trial. Lancet. 2020;396(10253):759-769.
3.     Ho CY, Day SM, Ashley EA, et al. Genotype and lifetime burden of disease in hypertrophic cardiomyopathy: insights from the Sarcomeric Human Cardiomyopathy Registry (SHaRe). Circulation. 2018;138(14):1387-1398.
4.     Olivotto I, Cecchi F, Poggesi C, Yacoub MH. Patterns of disease progression in hypertrophic cardiomyopathy: an individualized approach to clinical staging. Circ Heart Fail. 2012;5(4):535-546.
5.     Argulian E, Sherrid MV, Messerli FH. Misconceptions and facts about hypertrophic cardiomyopathy. Am J Med. 2016;129(2):148-152.
6.     Elliott PM, Anastasakis A, Borger MA, et al. 2014 ESC Guidelines on diagnosis and management of hypertrophic cardiomyopathy: the Task Force for the Diagnosis and Management of Hypertrophic Cardiomyopathy of the European Society of Cardiology (ESC).
Eur Heart J. 2014;35(39):2733-2779.
7.     Marian AJ, Braunwald E. Hypertrophic cardiomyopathy: genetics, pathogenesis, clinical manifestations, diagnosis, and therapy. Circ Res. 2017;121(7):749-770.
8.     Ommen SR, Mital S, Burke MA, et al. 2020 AHA/ACC guideline for the diagnosis and treatment of patients with hypertrophic cardiomyopathy: a report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines. Circulation. 2020;142(25):e558-e631.
9.     Maron BJ, Desai MY, Nishimura RA, et al. Management of hypertrophic cardiomyopathy: JACC State-of-the-Art Review. J Am Coll Cardiol. 2022;79(4):390-414.
10.  Desai MY, Owens A, Geske JB, et al. Myosin inhibition in patients with obstructive hypertrophic cardiomyopathy referred for septal reduction therapy. J Am Coll Cardiol. 2022;80(2):95-108.
11.  Maron BJ, Olivotto I, Bellone P, et al. Clinical profile of stroke in 900 patients with hypertrophic cardiomyopathy. J Am Coll Cardiol. 2002;39(2):301-307.
12.  Maron BJ, Maron MS. Hypertrophic cardiomyopathy. Lancet. 2013;381(9862):242-255.
13.  Desai MY, Wolski K, Owens A, et al. Study design and rationale of VALOR-HCM: evaluation of mavacamten in adults with symptomatic obstructive hypertrophic cardiomyopathy who are eligible for septal reduction therapy. Am Heart J. 2021;239:80-89.
14.  Scott SA, Sangkuhl K, Gardner EE, et al. Clinical Pharmacogenetics Implementation Consortium guidelines for cytochrome P450-2C19 (CYP2C19) genotype and clopidogrel therapy. Clin Pharmacol Ther. 2011;90(2):328-332.

Main results

Treatment with CAMZYOS resulted in a clinically meaningful reduction in the need for or eligibility for septal reduction therapy compared to placebo1:

  • Patients who met the primary composite endpoint (patient decision to undergo septum reduction and eligible for septum reduction based on guideline criteria) at week 16: Number % patients: 10 (17.9) vs 43 (76.8) 58.9% (95%) difference CI: 44.0%, 73.9%) p<0.0001

 

 


 

References:

1. CAMZYOS®, Product Information current edition

11. Desai MY, Wolski K, Owens A, et al. Study design and rationale of VALOR-HCM: evaluation of mavacamten in adults with symptomatic obstructive hypertrophic cardiomyopathy who are eligible for septal reduction therapy. Am Heart J. 2021;239:80-89.​

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