AKT-4601

A 26-year-old woman presents with an eight month history of amenorrhoea. She is not on any prescribed medication but uses over the counter acne treatments. Her body mass index is 31 kg/m2, she has a small amount of hair growth on her chin, abdominal and pelvic examinations are normal.

She is investigated and her blood results show:
LH 11.8 U/L (0.5-14.5)
FSH 4.2 U/L (1-11)
Testosterone 3.5 nmol/L (0.8-3.1)
Prolactin 580 mU/L (90-520)
Fasting glucose 6.4 mmol/L (<6.0) What is the most likely diagnosis?