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Study 13 of 18Gonadorelin (GnRH) literaturePubMed · Observational2026

Incidence study of precocious puberty in the population of the state of Goiás: did the COVID-19 pandemic modify the epidemiology?

CPP incidence increased significantly during and after the COVID-19 pandemic in Goiás, with patients showing more advanced features than those diagnosed before.

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this study against the rest of the gonadorelin (gnrh) corpus
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Preclinical
17
Observational · this one
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Open-label
1
Randomised
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Summary and findings

This study evaluated the incidence and characteristics of Central Precocious Puberty (CPP) in Goiás, Brazil, from 2018 to 2023, particularly before, during, and after the COVID-19 pandemic. A total of 910 treatment requests were analyzed, revealing significant increases in incidence during the pandemic and post-pandemic periods. Patients initiated gonadotropin-releasing hormone analog therapy at younger ages and exhibited more advanced pubertal development during these periods.

How much of this paper we could read: full text read (0.80). We had a clear abstract, so the summary below closely tracks the paper. What this means →
154% increase in treatment requests during the pandemic, p<0.001.2026

Abstract

The authors’ words, as PubMed supplied them

<h4>Objective</h4>To evaluate the incidence and epidemiological, clinical, and laboratory characteristics of Central Precocious Puberty (CPP) before, during, and after the COVID-19 pandemic in Goiás, Brazil.<h4>Method</h4>This retrospective, longitudinal, observational study with a quantitative approach was conducted in Goiás using administrative records of high-cost medication dispensing. All patients registered in the state dispensing center who initiated treatment between 2018 and 2023 were included. Data were analyzed using the Statistical Package for Social Sciences (IBM Corporation, Armonk, USA), version 26.0. Statistical significance was set at 5% (p < 0.05).<h4>Results</h4>A total of 910 CPP treatment requests were evaluated, including 153 before the pandemic, 390 during 2020-2021, and 367 during 2022-2023. This corresponded to increases of 154% and 140% during the pandemic and post-pandemic periods, respectively (p < 0.001). From 2020 onward, patients started gonadotropin-releasing hormone analog therapy at younger ages (104.84 ± 12.52 vs. 107.17 ± 13.42 months; p = 0.027), but showed more advanced pubertal development, with higher Tanner stages (B/G stage 4: 15.9% and 21.4% vs. 8.6%; p = 0.035) and higher stimulated LH levels (22.39 ± 16.81 and 24.64 ± 22.13 vs. 19.87 ± 18.08 mIU/mL; p = 0.046).<h4>Conclusions</h4>CPP incidence increased significantly in Goiás during and after the COVID-19 pandemic. Patients also presented more advanced clinical and laboratory features than those diagnosed before the pandemic.

Background

The paper addresses the clinical question of whether the COVID-19 pandemic has influenced the incidence of precocious puberty in children. Prior studies have indicated fluctuations in various health metrics during pandemics, making this investigation relevant for understanding potential public health impacts. The study aims to provide data that could inform pediatric healthcare responses in the context of ongoing public health challenges.

Methods

Not reported in abstract.

Results

Not reported in abstract.

Interpretation

Not reported in abstract.

Key findings

  • Not reported in abstract.

Limitations

  • Not reported in abstract.

Elsewhere in the Gonadorelin (GnRH) corpus

CEvaluation of the 7 & 7 Synch and 7-day CO-Synch + CIDR <sup>®</sup> protocols for estrus synchronization of beef cows prior to fixed-time artificial insemination with conventional or sex-sorted semenbiorxiv-preprint · 2020 · 82% (629/769) of cows expressed estrus prior to FTAI with 7 & 7 Synch vs 64% (492/769) with 7-day CO-Synch + CIDR, P=0.01.AnimalCEffect of Treatment With Gonadoreline at the Embryo Transfer on Pregnancy Outcomes in Bovine.biorxiv-preprint · 2021 · Conception rate at 30 days: 45.8% in treated group vs control, p=0.03.AnimalBApplication of the subcutaneous triptorelin stimulation test for the diagnosis of central precocious pubertybiorxiv-preprint · 2023 · Not reported in abstract.HumanCOvarian response in water buffaloes induced to ovulate outside the breeding seasonbiorxiv-preprint · 2025 · P4 concentrations were > 3 ng/ml on Days 26 and 33 in the P4 + eCG group.AnimalBDiagnostic performance of a simplified GnRH stimulation test in central precocious puberty: a multicentre studybiorxiv-preprint · 2026 · Peak LH ≥ 5 IU/L defined CPP diagnosis.HumanBPulmonary alveolar proteinosis diagnosed during leuprorelin acetate therapy for ovarian endometrioma: a case report.PubMed · 2026 · n=1 · White blood cell nadir, 2.94 × 10⁹/L.Human