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| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Lin, Lu Chen, Cunren Fang, Tuanyu Chen, Daoxiong Chen, Kaining Quan, Huibiao |
| Abstract | Background Type A insulin resistance syndrome, one type of the hereditary insulin resistance syndromes, is a rare disorder. Patients with type A insulin resistance syndrome are nonobese and demonstrate severe hyperinsulinemia, hyperandrogenism, and acanthosis nigricans. The clinical features are more severe in affected females than in males, and they mostly become apparent at the age of puberty. In many cases, when severe insulin resistance is covered up by other signs or symptoms of type A insulin resistance syndrome, patients are often easily misdiagnosed with other diseases, such as polycystic ovary syndrome. Case presentation Our patient was a 27-year-old Han Chinese woman who sought treatment because of a menstrual disorder and hirsutism. Tests showed that her levels of insulin and testosterone were elevated, and gynecological color Doppler ultrasound suggested multiple cystic changes in the bilateral ovaries. After a diagnosis of polycystic ovary syndrome was made, pulsatile gonadotropin-releasing hormone therapy and metformin were administered, but the patient’s symptoms did not improve in 1 year of follow-up. Considering that the previous diagnosis might have been incorrect, venous blood samples were collected from the patient and her relatives for genetic analysis. Subsequently, using Illumina sequencing, it was found that the proband, her father, and two brothers all had the c.3601C>T heterozygous missense mutation in exon 20 of the insulin receptor gene. The diagnosis was corrected to type A insulin resistance syndrome, and the patient’s treatment was modified. Conclusion We report a case of a young woman with type A insulin resistance syndrome that was misdiagnosed as polycystic ovary syndrome. We discuss the causes, clinical features, diagnosis, and treatment of type A insulin resistance syndrome to improve the recognition of the disease and reduce its misdiagnosis. Female patients with high androgen levels and severe hyperinsulinemia should be considered for the possibility of hereditary insulin resistance syndromes (such as type A insulin resistance syndrome). Gene sequencing helps in making an early diagnosis and developing a targeted treatment strategy. |
| Related Links | https://jmedicalcasereports.biomedcentral.com/counter/pdf/10.1186/s13256-019-2304-4.pdf |
| Ending Page | 6 |
| Page Count | 6 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 17521947 |
| DOI | 10.1186/s13256-019-2304-4 |
| Journal | Journal of Medical Case Reports |
| Issue Number | 1 |
| Volume Number | 13 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2019-11-27 |
| Access Restriction | Open |
| Subject Keyword | Medicine Public Health General Practice Family Medicine Primary Care Medicine Surgical Oncology Internal Medicine Type A insulin resistance syndrome Insulin receptor gene mutations Hyperinsulinemia Polycystic ovary syndrome Medicine/Public Health |
| Content Type | Text |
| Resource Type | Case study |
| Subject | Medicine |
| Journal Impact Factor | 0.9/2023 |
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