Real-world data from a single-center cohort of patients with metastatic hormone-sensitive prostate cancer in Spain: Analysis of response, progression, and quality of life.

[INTRODUCTION] Real-world analyses reflect routine clinical practice. We reviewed treatment response and quality of life in metastatic hormone-sensitive prostate cancer (mHSPC) patients treated with androgen receptor inhibitors.

[METHODS] We analyzed 89 patients with mHSPC from a descriptive observational cohort. The median follow-up was 16.1 months, with quarterly assessments. We evaluated PSA response, disease progression, and quality-of-life data.

[RESULTS] Among the patients, 37% had high-volume disease and 63% low-volume; 60% had synchronous metastases. Using apalutamide, we observed PSA reductions of 90%, PSA < 0.2 ng/ml, and ultra-low PSA (<0.02 ng/ml) at 3 and 6 months in 63%, 65%, and 34% and in 65%, 71%, and 53% of patients, respectively. Radiographic progression-free survival (rPFS) was 88% at 15 months. When PET-PSMA was used for imaging, 94% and 92% of patients remained free of radiographic progression at 12 and 24 months, respectively. Regarding quality of life, the FACT-P score remained stable, and pain on the visual analog scale improved, with the proportion of patients scoring >1 decreasing from 35% to 22% over 6 months.

[CONCLUSION] Real-world analyses using androgen receptor inhibitors in mHSPC reproduce clinical trial results in terms of treatment response. Profound PSA declines and observed progression-free survival outcomes reflect treatment effectiveness without a negative impact on quality of life.