Abstract
Objectives
The use of inhibin B (INHB), anti-Müllerian hormone (AMH) and insulin-like growth factor-1 (IGF-1) in differentiating central precocious puberty (CPP) from non-CPP was evaluated.
Methods
In total, 115 Chinese girls were recruited (CPP: 44, non-CPP: 71). The diagnostic performance of INHB, AMH and IGF-1 in differentiating CPP from non-CPP was analyzed using receiver operating characteristic (ROC) curves.
Results
INHB levels were higher in the CPP group than in the non-CPP group (55.56 ± 22.42 vs. 32.97 ± 15.59 pg/mL; p<0.001). AMH levels were similar in the CPP and non-CPP groups (6.63 ± 3.74 vs. 5.70 ± 3.15 pg/mL; p=0.158), and IGF-1 levels were much higher in the CPP group than in the non-CPP group (290.75 ± 79.78 vs. 200.10 ± 54.01 pg/mL; p<0.001). The area under the ROC curve (AUC) was greatest for INHB (0.819, standard error (SE) 0.041), followed by IGF-1 (0.809, SE 0.047) and AMH (0.567, SE 0.057). Among the ROC curves including combinations of these parameters, the AUC for INHB + IGF-1 was 0.849 and that for INHB + AMH was 0.768.
Conclusions
Serum INHB and IGF-1 measurements could predict positive responses to gonadotropin-releasing hormone (GnRH) analog stimulation in girls with precocious puberty.
Funding source: Beijing Municipal Administration of Hospitals Incubating Program
Award Identifier / Grant number: (PX2020055)
Acknowledgments
No.
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Research funding: FUNDING: Supported by the Beijing Municipal Administration of Hospitals Incubating Program (PX2020055).
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Author contributions: Liu Ziqin collected and analyzed the data and prepared the manuscript. Chen Xiaobo and Li Xiaohui participated in the preparation of the manuscript. Song Qinwei ensured the quality of laboratory data.
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Competing interests: Authors state no conflict of interest.
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Informed consent: Informed consent was obtained from all individuals included in this study.
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Ethical approval: The local Institutional Review Board deemed the study exempt from review.
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