AI Article Synopsis
- The study looked at different ways to treat patients with urinary problems caused by an enlarged prostate, comparing starting with one medicine to switching to a combination of two medicines later.
- It found that starting with the combination right away helped patients feel better faster than waiting to add the second medicine later.
- The results showed that patients who got the combination treatment immediately had better scores on their symptoms after 48 months compared to those who switched later, meaning they had less severe urinary issues.
Article Abstract
Purpose: Despite superiority of tamsulosin-dutasteride combination therapy versus monotherapy for lower urinary tract symptoms due to benign prostatic hyperplasia (LUTS/BPH), patients at risk of disease progression are often initiated on α-blockers. This study evaluated the impact of initiating tamsulosin monotherapy prior to switching to tamsulosin-dutasteride combination therapy versus immediate combination therapy using a longitudinal model describing International Prostate Symptom Score (IPSS) trajectories in moderate/severe LUTS/BPH patients at risk of disease progression.
Methods: Clinical trial simulations (CTS) were performed using data from 10,238 patients from Phase III/IV dutasteride trials. The effect of varying disease progression rates was explored by comparing profiles on- and off-treatment. CTS scenarios were investigated, including a reference (immediate combination therapy) and six alternative virtual treatment arms (delayed combination therapy of 1-24 months). Clinical response (≥ 25% IPSS reduction relative to baseline) was analysed using log-rank test. Differences in IPSS relative to baseline at various on-treatment time points were assessed by t tests.
Results: Delayed combination therapy initiation led to significant (p < 0.01) decreases in clinical response. At month 48, clinical response rate was 79.7% versus 74.1%, 70.3% and 71.0% and IPSS was 6.3 versus 7.6, 8.1 and 8.0 (switchers from tamsulosin monotherapy after 6, 12 and 24 months, respectively) with immediate combination therapy. More patients transitioned from severe/moderate to mild severity scores by month 48.
Conclusions: CTS allows systematic evaluation of immediate versus delayed combination therapy. Immediate response to α-blockers is not predictive of long-term symptom improvement. Observed IPSS differences between immediate and delayed combination therapy (6-24 months) are statistically significant.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6994451 | PMC |
| http://dx.doi.org/10.1007/s00345-019-02783-x | DOI Listing |
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