This multicenter retrospective study developed and validated a prediction model based on PSMA PET/CT and routine clinical information to estimate early treatment response in patients with metastatic hormone-sensitive prostate cancer (mHSPC) receiving first-line standard therapy. Existing PSMA PET/CT scans were used to quantify tumor burden, and imaging metrics were combined with baseline clinical factors, including laboratory results and disease characteristics, to build an interpretable model for predicting the likelihood and timing of achieving a deep PSA response (PSA ≤ 0.2 ng/mL) after initiation of first-line treatment. All data were collected from medical records and imaging obtained as part of routine care; no additional tests or treatments were required. The objective was to improve risk stratification and support individualized follow-up and treatment planning for patients with mHSPC.
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Time to deep PSA response (PSA ≤ 0.2 ng/mL)
Timeframe: From initiation of first-line therapy to the first PSA measurement ≤ 0.2 ng/mL, up to 36 months