Health Care Resource Utilization in Spinal Muscular Atrophy (SMA) Type 1 Patients in Japan: Results of a Global Caregiver Survey


Clinical Management

Poster Number: 18


Walter Toro, Novartis Gene Therapies, Inc., Satoru Tanaka, Novartis Pharma KK, Anish Patel, Novartis Gene Therapies, Omar Dabbous, Novartis Gene Therapies, Anastasiia Motrunich, Creativ-Ceutical, Amir Amin, Creativ-Ceutical, Mondher Toumi, Creativ-Ceutical, Imen Touati, Creativ-Ceutical, Kayoko Saito, MD, PhD, Institute of Medical Genetics, Tokyo Women’s Medical University

Objectives: We sought to describe health care resource utilization (HCRU), including hospitalizations, health care professional (HCP) visits, and device utilization, for children with SMA type 1 (SMA1) in Japan.
Background: SMA1, a rare, genetic neuromuscular disease that causes loss of both voluntary motor and bulbar functions, is usually fatal by 2 years of age if untreated. HCRU data on hospitalizations and ongoing standard multi-disciplinary care for SMA1 are sparse.
Methods: An online survey was disseminated by the principal investigator and a patient advocacy group (Japan Network for Spinal Muscular Atrophy) from 10/2020–3/2021. Eligible respondents were voluntary non-HCP adult caregivers of patients with SMA type 1, 2, or 3 in Japan. Respondents reported HCRU data over the past 6 months.
Results: As of March 5, 2021, 48 caregivers (mean age, 38.7 years) managing 50 patients with SMA1 responded. During their lifetimes, 28 patients (56%) underwent gastrostomy and 28 (56%) underwent tracheostomy. Median durations of hospital stays were 17 days for gastrostomy and 35 days for tracheostomy. Within the past 6 months, 37 patients (74%) spent at least one night in the hospital (average number of stays, 2.43; average duration of stay, 5.89 days). Forty-eight patients (96%) visited a pediatrician within the past 6 months, the majority (62.9%) being in a hospital setting, with 59.1% reporting monthly visits. Other frequently reported HCP visits were to physiotherapists (82% of cases), non-specialist nurses (76%), and occupational therapists (58%). Frequently used devices or equipment included suction machines (80% of cases), cough-assist machines (60%), breathing machines (54%), wheelchairs (66%), sitting retainers (66%), and gastric feeding tubes (64%).
Conclusions: SMA1 in Japan is associated with substantial HCRU, highlighting the need for ongoing multi-disciplinary care for these patients. Early diagnosis, facilitated by newborn screening and timely intervention with disease-modifying treatment, may reduce these burdens and associated costs.