The Study aims to determine the proposed positive influence of Sitagliptin in manipulating hormonal , metabolic and inflammatory parameters in the treatment of Polycystic ovary syndrome and subsequent infertility

Study Design : a Prospective Randomized Controlled Trial.

A Total of 80 infertile Adult Females aged between 18 and 45 years currently diagnosed with Polycystic ovary syndrome , Meeting the Diagnosis of Rotterdam criteria be diagnosed if any two of the following are present: (1) clinical or biochemical hyperandrogenism, (2) evidence of oligo-anovulation, (3) polycystic appearing-ovarian morphology on ultrasound are to be included in the study.

The study will include two groups; each group consists of 40 patients:- Group A : Control Group Group B : Test Group ( will Receive Sitagliptin at a dose of 100 mg every 24 hours

Inclusion Criteria:

polycystic ovary syndrome usually diagnosed based on the Rotterdam criteria if 2 of 3 criteria are present:

1. oligo- and/or anovulation
2. hyperandrogenism (HA) (clinical and/or biochemical)
3. polycystic ovary morphology (PCOM) on ultrasonography (either 12 or more follicles measuring 2-9 mm in diameter and/or an increased ovarian volume >10 cm3).

Exclusion Criteria:

1. congenital adrenal hyperplasia
2. Brittle control of a thyroid disorder
3. Diabetic on Metformin or any another antidiabetic drugs affecting insulin resistance
4. chronic kidney disease
5. liver dysfunction
6. documented use of oral hormonal contraceptives and hormone-releasing implants in the past 6 months prior to study entry 7.Lipid lowering Consumption