FRI305 Impulse Control Disorders In Patients With Prolactinomas And Non-Functioning Pituitary Adenomas Treated With Dopamine Agonists

Disclosure: T. Kolitz: None. E. Shemesh: None. A. Nathan: None. R. Eldor: None. E. Izkhakov: None. Y. Greenman: None. Objective Impulse control disorder (ICD) is a well-recognized side effect of dopamine agonist (DA) treatment in patients with Parkinson’s disease and restless leg syndrome. The available data on the incidence of ICD in patients treated with DA for pituitary tumors are sparse. This study aimed to assess the occurrence of ICD among patients with prolactinomas or NFPA treated with DA compared to patients with prolactinomas or NFPA not treated with DA and to patients with non-pituitary endocrine disorders. Methods Patients attending the general endocrine and pituitary clinics at the Institute of Endocrinology in our medical center were invited to fill in an anonymous validated questionnaire on hypersexuality, pathologic gambling, compulsive shopping, and punding. Associated relevant clinical information was also obtained. Results In total, 174 patients consented to participate. Those with pituitary disorders other than prolactinomas and NFPA were excluded. The final study cohort consisted of 67 patients with NFPA (31 DA-treated) and 40 with prolactinomas (35 DA-treated). The control group consisted of 67 non-DA-treated subjects with other endocrine disorders. The entire cohort was comprised of 77 men and 97 women (mean age 56±17 years). ICDs were reported by 19/66 (29%) DA-treated patients with prolactinomas or NFPA, 3/41 (7%) non-DA-treated patients with prolactinomas or NFPA and 8/108 (7.5%) non-DA-treated patients with prolactinomas, NFPA or other endocrine disorders (p<0.001). There were no significant differences in ICD rates between DA-treated patients with prolactinomas compared to those with DA-treated NFPA, or between non-DA-treated patients with either prolactinomas or NFPA and controls. The ICD rate among DA-treated women was significantly higher than that of non-DA-treated women (34.5% and 7.5%, respectively. p<0.001). No comparable differences were observed in DA-treated versus non-DA-treated men or between all participating men and women. Conclusion ICD rates are significantly higher among patients treated with DA for prolactinomas or NFPA compared to non-DA-treated patients with prolactinomas, NFPA or other non-pituitary endocrine disorders. Patients being treated with DA for any pituitary lesion should be informed of the greater risk of associated ICD. Presentation: Friday, June 16, 2023