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Quarterly triptorelin showed comparable hormonal suppression to monthly dosing in Chinese girls with central precocious puberty.

Quarterly triptorelin showed comparable hormonal suppression to monthly dosing in Chinese girls with…
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Key Takeaway
Note that quarterly triptorelin showed comparable LH suppression to monthly dosing in this small retrospective cohort.

This retrospective cohort study included 70 Chinese girls diagnosed with central precocious puberty at Fuzhou First General Hospital. Participants received either quarterly triptorelin (15 mg every 90 days) or monthly triptorelin (3.75 mg every 28 days). The study assessed bone maturation, predicted adult height, and hormonal suppression as primary outcomes, alongside secondary outcomes including serum LH and FSH concentrations, uterine and ovarian volumes, BMI, and adverse events. Follow-up duration was 12 months.

Regarding hormonal suppression, serum LH levels were 0.30 ± 0.19 IU/L for the quarterly group and 0.30 ± 0.26 IU/L for the monthly group. The direction of the effect indicated comparable suppression between the two dosing schedules. P-values were not reported in the available text. Data on predicted adult height, bone maturation, and other secondary outcomes were not detailed in the provided results.

Safety and tolerability were assessed, though specific rates of adverse events, discontinuations, or serious adverse events were not reported. The study design is observational, which limits the ability to infer causality. Funding sources and potential conflicts of interest were not reported. Given the retrospective nature and lack of reported p-values or detailed safety data, clinical application should be conservative.

Study Details

Study typeCohort
EvidenceLevel 3
PublishedApr 2026
View Original Abstract ↓
BackgroundThis study aimed to compare the clinical efficacy of quarterly (15 mg/90 days) versus monthly (3.75 mg/28 days) triptorelin formulations with respect to bone maturation, predicted adult height (PAH), and hormonal suppression in Chinese girls with central precocious puberty (CPP).MethodsThis retrospective cohort study included 70 girls diagnosed with CPP at Fuzhou First General Hospital from March 2023 to 2025. Participants were assigned to either a quarterly regimen (triptorelin 15 mg every 90 days, n = 32) or a monthly regimen (triptorelin 3.75 mg every 28 days, n = 38). The evaluated outcomes included bone age (BA; TW3 method), PAH, serum luteinizing hormone (LH) and follicle-stimulating hormone (FSH) concentrations, uterine and ovarian volumes, body mass index (BMI), and adverse events, assessed at baseline, 6 months, and 12 months.ResultsAfter 12 months of treatment, both regimens achieved effective and comparable suppression of LH (quarterly: 0.30 ± 0.19 IU/L; monthly: 0.30 ± 0.26 IU/L; both P 
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