Effectiveness of Intrauterine Growth Hormone Administration as an add-on Therapy to Conventional Hormone Therapy Compared to Placebo in Patients With Thin Endometrium Undergoing Frozen Thawed Embryo Transfer

In this group, patients will receive growth hormone solution containing 1.99 milligrams of the drug dissolved in 1.5 milliliters of 0.9% saline solution (normal saline), in addition to standard hormonal therapy, starting from cycle day 10. Treatment sessions will be conducted at two-day intervals. In case of non-response to treatment (failure to reach a minimum endometrial thickness of 7 millimeters in the subsequent assessment), the patient will receive a maximum of 4 doses, and if response to treatment is observed, growth hormone infusion will be discontinued. All infusions will be administered intrauterinely via an Intrauterine Insemination (IUI) catheter.

Similar to the intervention group, from cycle day 10, an equal volume of 0.9% saline solution (normal saline) will be administered in addition to standard hormonal therapy. Treatment sessions will be conducted at two-day intervals. In case of non-response to treatment (failure to reach a minimum endometrial thickness of 7 millimeters in the subsequent assessment), the patient will receive a maximum of 4 doses, and if response to treatment is observed, placebo infusion will be discontinued. All infusions will be administered intrauterinely via an Intrauterine Insemination (IUI) catheter.