International journal of gynecological cancer : official journal of the International Gynecological Cancer Society · 2026
The impact of BRCA status on the efficacy of paclitaxel monotherapy in recurrent ovarian cancer.
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Russo Giorgia, Apostol Adriana Ionelia, Ruscito Ilary, Sassu Carolina Maria, Diella Claudia, Salvati Fabiana, Capomacchia Filippo Maria, Boccia Serena Maria, Vertechy Laura, Marth Christian, Fagotti Anna, Marchetti Claudia
Аннотация
OBJECTIVE: In BRCA-mutated (BRCAmut) patients, while sensitivity to platinum has been assessed, the efficacy of other chemotherapy drugs, such as paclitaxel, in the recurrent setting is less defined. To this purpose, a single-center retrospective study was designed to evaluate the effects of paclitaxel monotherapy in patients with platinum-resistant ovarian cancer based on BRCA status.
METHODS: We collected data on patients with recurrent high-grade epithelial ovarian cancer treated with paclitaxel monotherapy between November 2017 and October 2024. Only patients who received 2 to 4 previous lines of chemotherapy before paclitaxel were selected. BRCAmut patients were compared with BRCA wild-type (BRCAwt) patients. The primary outcome was the impact of paclitaxel monotherapy on overall survival in both groups separately. The secondary outcomes were progression-free survival, response rate, and toxicity profile.
RESULTS: Of 175 patients who received paclitaxel, 155 met the inclusion criteria: 50 (32.3%) BRCAmut and 105 (67.7%) BRCAwt patients. Median progression-free survival was 5 months (95% confidence interval [CI] 3.58 to 6.42) in the BRCAwt group compared with 4 months (95% CI 2.29 to 5.71) in the BRCAmut group (p = .013). In BRCAmut patients, median overall survival was 11 months (95% CI 8.28 to 13.72) compared with 18 months for the BRCAwt group (95% CI 16.04 to 19.96) (p < .001). In the 93 patients who had previously received poly (ADP-ribose) polymerase (PARP) inhibitors, overall survival remained significantly longer in BRCAwt patients (p = .004), but not progression-free survival (p > .05).
CONCLUSIONS: Treatment with paclitaxel monotherapy seems to be less effective in patients with recurrent platinum-resistant BRCAmut ovarian cancer compared with the BRCAwt population. Further clinical studies are needed to confirm these data and investigate potential mechanisms of paclitaxel resistance in BRCAmut carriers.
METHODS: We collected data on patients with recurrent high-grade epithelial ovarian cancer treated with paclitaxel monotherapy between November 2017 and October 2024. Only patients who received 2 to 4 previous lines of chemotherapy before paclitaxel were selected. BRCAmut patients were compared with BRCA wild-type (BRCAwt) patients. The primary outcome was the impact of paclitaxel monotherapy on overall survival in both groups separately. The secondary outcomes were progression-free survival, response rate, and toxicity profile.
RESULTS: Of 175 patients who received paclitaxel, 155 met the inclusion criteria: 50 (32.3%) BRCAmut and 105 (67.7%) BRCAwt patients. Median progression-free survival was 5 months (95% confidence interval [CI] 3.58 to 6.42) in the BRCAwt group compared with 4 months (95% CI 2.29 to 5.71) in the BRCAmut group (p = .013). In BRCAmut patients, median overall survival was 11 months (95% CI 8.28 to 13.72) compared with 18 months for the BRCAwt group (95% CI 16.04 to 19.96) (p < .001). In the 93 patients who had previously received poly (ADP-ribose) polymerase (PARP) inhibitors, overall survival remained significantly longer in BRCAwt patients (p = .004), but not progression-free survival (p > .05).
CONCLUSIONS: Treatment with paclitaxel monotherapy seems to be less effective in patients with recurrent platinum-resistant BRCAmut ovarian cancer compared with the BRCAwt population. Further clinical studies are needed to confirm these data and investigate potential mechanisms of paclitaxel resistance in BRCAmut carriers.