416-P: Mortality, Major Adverse Cardiovascular Events (MACE) and Diabetic Complications in Men with Hypogonadism and Type 2 Diabetes on Long-Term Testosterone Treatment: An Update from a Urological Registry Study

Background: Men with hypogonadism are at increased risk of MACE and mortality. Studies in men with T2DM show that testosterone therapy reduces both MACE and mortality.

Methods: In a registry of 883 men with hypogonadism, 370 men (41.9%) have T2DM. 190 received TU 1000 mg/12 weeks (T-group) , 180 opted against treatment (CTRL) . All patients received standard diabetes treatment including lifestyle courses at a diabetes center. MACE, mortality, and diabetic complications were recorded and compared between groups.

Results: Mean baseline age in the T-group and CTRL was 61.0±5.3 and 63.0±4.9 years. Mean follow-up in T-group and CTRL was 9.0 and 9.7 years. 71 patients (37.4%) in the T-group and 74 (41.1%) in CTRL had a history of cardiovascular disease (myocardial infarction MI, stroke, or coronary artery disease diagnosis) (p<0.05) . Baseline smoking prevalence was 41.6% (79 men) in the T-group and 37.4% (67 men) in CTRL (p=0.415) . The T-group had a worse baseline risk factor profile than CTRL: BMI (36.5±4.4 vs. 32.8±4.7 kg/m²) , systolic blood pressure (163.0±13.3 vs. 145.5±14.5 mmHg) , LDL (4.7±0.8 vs. 4.1±1.4 mmol/L) , HbA_1c 9.5±1.4 vs. 7.8±0.7% (p<0.00for all) . Mortality: during the entire observation period, 21 patients (11.1%) died in the T-group vs. 62 (34.4%) in CTRL (p<0.0001) . Major adverse cardiovascular events (MACE) : in the T-group, there were no cases of MI or stroke. In CTRL, there were 62 cases of MI (34.4%) and 51 cases of stroke (28.3%) . Diabetic complications: in the T-group and CTRL, the incidence of retinopathy was 4 (2.1%) vs. 30 (16.7%) (p<0.0001) , nephropathy 1 (0.01%) vs. 7 (0.4%) (p=0.05) , polyneuropathy (5.3%) vs. 97 (53.9%) (p<0.0001) , diabetic foot syndrome 0 (0%) vs. 17 (9.4%) (p<0.0001) .

Conclusions: Long-term treatment with TU in men with hypogonadism and T2DM reduces mortality, MACE, and diabetic complications, compared to untreated controls.