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Maffazioli GDN, Bachega TASS, Hayashida SAY, Gomes LG, Valassi HPL, Marcondes JAM, Mendonca BB, Baracat EC, Maciel GAR. Steroid Screening Tools Differentiating Nonclassical Congenital Adrenal Hyperplasia and Polycystic Ovary Syndrome. J Clin Endocrinol Metab 2020; 105:5856607. [PMID: 32530459 DOI: 10.1210/clinem/dgaa369] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 06/10/2020] [Indexed: 11/19/2022]
Abstract
PURPOSE To analyze the performance of basal 17OH-progesterone (17OHP) levels versus the basal 17OHP/cortisol ratio in nonclassical congenital adrenal hyperplasia (NCAH) and polycystic ovary syndrome (PCOS) differential diagnosis. Basal 17OHP levels >10 ng/mL have been used to confirm NCAH diagnosis without the adrenocorticotropic hormone (ACTH) test; however, the optimal cutoff value is a matter of debate. METHODS A cross-sectional study was performed at the endocrinology and gynecological endocrinology outpatient clinics of a tertiary hospital. A total of 361 patients with PCOS (age 25.0 ± 5.3 years) and 113 (age 19.0 ± 13.6 years) patients with NCAH were enrolled. Basal and ACTH-17OHP levels were measured by radioimmunoassay, and CYP21A2 molecular analysis was performed to confirm hormonal NCAH diagnosis. Receiver operating characteristic curve analysis compared basal 17OHP levels and the 17OHP/cortisol ratio between NCAH and PCOS patients. RESULTS Basal 17OHP levels were higher in NCAH patients than in those with PCOS (8.85 [4.20-17.30] vs 1.00 [0.70-1.50] ng/mL; P < 0.0001), along with 17OHP/cortisol ratio (0.86 [0.47-1.5]) vs 0.12 [0.07-0.19]; P < 0.0001, respectively). Basal 17OHP levels and the 17OHP/cortisol ratio were strongly correlated in both groups (rho = 0.82; P < 0.0001). Areas under the curves for basal 17OHP levels (0.9528) and the 17OHP/cortisol ratio (0.9455) were not different to discriminate NCAH and PCOS (P > 0.05). Basal 17OHP level >5.4 ng/mL and 17OHP/cortisol ratio >2.90 had 100% specificity to identify NCAH. MAIN CONCLUSIONS Basal 17OHP levels >5.4 ng/mL can be used to perform differential diagnoses between NCAH and PCOS, dismissing the ACTH test. The basal 17OHP/cortisol ratio was not superior to basal 17OHP levels in this scenario.
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Affiliation(s)
- Giovana D N Maffazioli
- Disciplina de Ginecologia, Departamento de Obstetricia e Ginecologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Tania A S S Bachega
- Unidade de Suprarrenal, Laboratorio de Hormonios e Genetica Molecular LIM42, Disciplina de Endocrinologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Sylvia A Y Hayashida
- Disciplina de Ginecologia, Departamento de Obstetricia e Ginecologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Larissa G Gomes
- Unidade de Suprarrenal, Laboratorio de Hormonios e Genetica Molecular LIM42, Disciplina de Endocrinologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Helena P L Valassi
- Unidade de Suprarrenal, Laboratorio de Hormonios e Genetica Molecular LIM42, Disciplina de Endocrinologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | | | - Berenice B Mendonca
- Unidade de Suprarrenal, Laboratorio de Hormonios e Genetica Molecular LIM42, Disciplina de Endocrinologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Edmund C Baracat
- Disciplina de Ginecologia, Departamento de Obstetricia e Ginecologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Gustavo A R Maciel
- Disciplina de Ginecologia, Departamento de Obstetricia e Ginecologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil
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