{"title":"Multi-biomarker models based on the androgen backdoor pathway for diagnosing 17α-hydroxylase/17,20-lyase deficiency.","authors":"Yongqi Liu, Susu Cai, Tingting Zhang, Shixin Sun, Xujing Kong, Jianfeng Zhou, Baorong Chen, Zenghe Li","doi":"10.1007/s12020-026-04767-5","DOIUrl":null,"url":null,"abstract":"<p><strong>Objectives: </strong>17α-hydroxylase/17,20-lyase deficiency (17OHD) is a rare form of congenital adrenal hyperplasia (CAH) that is frequently underdiagnosed, particularly in partial deficiency. We evaluated androgen backdoor pathway steroids as diagnostic biomarkers for 17OHD.</p><p><strong>Methods: </strong>We included 50 confirmed 17OHD patients and 266 healthy controls. Six androgen backdoor pathway steroids-5α-dihydroprogesterone (5α-DHP), 17OH-dihydroprogesterone (17OH-DHP), 17OH-allopregnanolone (17OH-Allo), androsterone (AN), androstanediol (3α-diol), and 5α-dihydrotestosterone (DHT)-were quantified in plasma using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Diagnostic performance was evaluated using receiver operating characteristic (ROC) analysis. Multi-marker models were constructed using single-marker area under the curve (AUC) thresholds ( > 0.7, > 0.8, and > 0.9) and subsequently evaluated in the validation cohort.</p><p><strong>Results: </strong>In males, AUCs for 5α-DHP, 17OH-DHP, 17OH-Allo, AN, 3α-diol, and DHT were 1.000, 0.754, 0.531, 0.940, 0.859, and 0.954; in females, they were 0.999, 0.710, 0.546, 0.964, 0.809, and 0.929. Based on single-marker AUC thresholds, multi-marker diagnostic models were constructed: AUC > 0.7, (5α-DHP + 17OH-DHP) / (AN + 3α-diol + DHT) (cut-off > 0.865 in males, > 1.415 in females); AUC > 0.8, 5α-DHP / (AN + 3α-diol + DHT) (cut-off > 0.779 in males, > 1.402 in females); and AUC > 0.9, 5α-DHP / (AN + DHT) (cut-off > 1.053 in males, > 2.146 in females). All models achieved an AUC of 1.000 with 100% sensitivity and specificity and showed promising diagnostic performance in the validation cohort.</p><p><strong>Conclusions: </strong>The combined models showed promising diagnostic performance for 17OHD and were preliminarily evaluated in the validation cohort, supporting the potential of androgen backdoor pathway steroids as diagnostic biomarkers for 17OHD.</p>","PeriodicalId":49211,"journal":{"name":"Endocrine","volume":"91 1","pages":""},"PeriodicalIF":3.3000,"publicationDate":"2026-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Endocrine","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s12020-026-04767-5","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENDOCRINOLOGY & METABOLISM","Score":null,"Total":0}
引用次数: 0
Abstract
Objectives: 17α-hydroxylase/17,20-lyase deficiency (17OHD) is a rare form of congenital adrenal hyperplasia (CAH) that is frequently underdiagnosed, particularly in partial deficiency. We evaluated androgen backdoor pathway steroids as diagnostic biomarkers for 17OHD.
Methods: We included 50 confirmed 17OHD patients and 266 healthy controls. Six androgen backdoor pathway steroids-5α-dihydroprogesterone (5α-DHP), 17OH-dihydroprogesterone (17OH-DHP), 17OH-allopregnanolone (17OH-Allo), androsterone (AN), androstanediol (3α-diol), and 5α-dihydrotestosterone (DHT)-were quantified in plasma using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Diagnostic performance was evaluated using receiver operating characteristic (ROC) analysis. Multi-marker models were constructed using single-marker area under the curve (AUC) thresholds ( > 0.7, > 0.8, and > 0.9) and subsequently evaluated in the validation cohort.
Results: In males, AUCs for 5α-DHP, 17OH-DHP, 17OH-Allo, AN, 3α-diol, and DHT were 1.000, 0.754, 0.531, 0.940, 0.859, and 0.954; in females, they were 0.999, 0.710, 0.546, 0.964, 0.809, and 0.929. Based on single-marker AUC thresholds, multi-marker diagnostic models were constructed: AUC > 0.7, (5α-DHP + 17OH-DHP) / (AN + 3α-diol + DHT) (cut-off > 0.865 in males, > 1.415 in females); AUC > 0.8, 5α-DHP / (AN + 3α-diol + DHT) (cut-off > 0.779 in males, > 1.402 in females); and AUC > 0.9, 5α-DHP / (AN + DHT) (cut-off > 1.053 in males, > 2.146 in females). All models achieved an AUC of 1.000 with 100% sensitivity and specificity and showed promising diagnostic performance in the validation cohort.
Conclusions: The combined models showed promising diagnostic performance for 17OHD and were preliminarily evaluated in the validation cohort, supporting the potential of androgen backdoor pathway steroids as diagnostic biomarkers for 17OHD.
期刊介绍:
Well-established as a major journal in today’s rapidly advancing experimental and clinical research areas, Endocrine publishes original articles devoted to basic (including molecular, cellular and physiological studies), translational and clinical research in all the different fields of endocrinology and metabolism. Articles will be accepted based on peer-reviews, priority, and editorial decision. Invited reviews, mini-reviews and viewpoints on relevant pathophysiological and clinical topics, as well as Editorials on articles appearing in the Journal, are published. Unsolicited Editorials will be evaluated by the editorial team. Outcomes of scientific meetings, as well as guidelines and position statements, may be submitted. The Journal also considers special feature articles in the field of endocrine genetics and epigenetics, as well as articles devoted to novel methods and techniques in endocrinology.
Endocrine covers controversial, clinical endocrine issues. Meta-analyses on endocrine and metabolic topics are also accepted. Descriptions of single clinical cases and/or small patients studies are not published unless of exceptional interest. However, reports of novel imaging studies and endocrine side effects in single patients may be considered. Research letters and letters to the editor related or unrelated to recently published articles can be submitted.
Endocrine covers leading topics in endocrinology such as neuroendocrinology, pituitary and hypothalamic peptides, thyroid physiological and clinical aspects, bone and mineral metabolism and osteoporosis, obesity, lipid and energy metabolism and food intake control, insulin, Type 1 and Type 2 diabetes, hormones of male and female reproduction, adrenal diseases pediatric and geriatric endocrinology, endocrine hypertension and endocrine oncology.