Xiao-Qiao Chen1, Yang-Yang Wang2, Meng-Na Zhang2, Qian Lu2, Ling-Yu Pang2, Li-Ying Liu3, Yu-Fen Li4, Li-Ping Zou5. 1. Department of Pediatrics, First Medical Center, Chinese PLA General Hospital, Beijing, China; Department of Pediatrics, The 904th Hospital of Joint Logistic Support Force, Wuxi, China. 2. Department of Pediatrics, First Medical Center, Chinese PLA General Hospital, Beijing, China. 3. Department of Pediatrics, First Medical Center, Chinese PLA General Hospital, Beijing, China; Department of Neurology, Beijing Jingdu Children's Hospital, Beijing, China. 4. Department of Pediatrics, Shandong Linyi People's Hospital, Linyi, China. 5. Department of Pediatrics, First Medical Center, Chinese PLA General Hospital, Beijing, China; Center of Epilepsy, Beijing Institute for Brain Disorders, Beijing, China. Electronic address: zouliping21@hotmail.com.
Abstract
OBJECTIVES: To investigate the efficacy and safety of sirolimus in the treatment of cardiac rhabdomyomas associated with tuberous sclerosis complex and the specific benefits in different subgroups. STUDY DESIGN: The study was a prospective cohort and self-controlled case series study. Based on the prevalence of cardiac rhabdomyoma at different ages, we estimated the natural tumor disappearance rate. The subgroup analysis was done by Cox regression. Self-controlled case series method was used to assess the magnitude and duration of the drug effect. Adverse events were described. RESULTS: A total of 217 patients were included in the cohort study. Tumor disappearance rate was higher in younger age groups (hazard ratio = 0.99, P = .027) and female patients (hazard ratio = 2.08, P = .015). The age-adjusted incidence ratio showed that the disappearance of rhabdomyomas between 3 and 6 months was more related to sirolimus. Adverse events were observed 60 times in 42 of 217 children, mainly stomatitis. CONCLUSIONS: Sirolimus can increase the disappearance rate of cardiac rhabdomyoma in the tuberous sclerosis complex population. Efficacy varies by sex and age: female and younger patients have higher tumor disappearance rate. Sirolimus is well-tolerated.
OBJECTIVES: To investigate the efficacy and safety of sirolimus in the treatment of cardiac rhabdomyomas associated with tuberous sclerosis complex and the specific benefits in different subgroups. STUDY DESIGN: The study was a prospective cohort and self-controlled case series study. Based on the prevalence of cardiac rhabdomyoma at different ages, we estimated the natural tumor disappearance rate. The subgroup analysis was done by Cox regression. Self-controlled case series method was used to assess the magnitude and duration of the drug effect. Adverse events were described. RESULTS: A total of 217 patients were included in the cohort study. Tumor disappearance rate was higher in younger age groups (hazard ratio = 0.99, P = .027) and female patients (hazard ratio = 2.08, P = .015). The age-adjusted incidence ratio showed that the disappearance of rhabdomyomas between 3 and 6 months was more related to sirolimus. Adverse events were observed 60 times in 42 of 217 children, mainly stomatitis. CONCLUSIONS:Sirolimus can increase the disappearance rate of cardiac rhabdomyoma in the tuberous sclerosis complex population. Efficacy varies by sex and age: female and younger patients have higher tumor disappearance rate. Sirolimus is well-tolerated.