Chemotherapy vs tamoxifen in platinum-resistant ovarian cancer: a phase III, randomised, multicentre trial (Ovaresist) Ovarian Cancer and Us OVARIAN CANCER and US Ovarian Cancer and Us

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Wednesday, January 25, 2017

Chemotherapy vs tamoxifen in platinum-resistant ovarian cancer: a phase III, randomised, multicentre trial (Ovaresist)



abstract:
Chemotherapy vs tamoxifen in platinum-resistant ovarian cancer: a phase III, randomised, multicentre trial (Ovaresist) : British Journal of Cancer


Background:
Chemotherapy in platinum-resistant ovarian cancer (PROC) aims for palliation and prolonging of progression-free survival (PFS). This study compares Health-related Quality of Life (HRQoL) and efficacy between single-agent chemotherapy and tamoxifen in PROC.

Methods:
Patients with PROC were randomised (2:1) to chemotherapy (weekly paclitaxel 80mgm−2 or four weekly pegylated liposomal doxorubicin 40mgm−2) or tamoxifen 40mg daily. The primary end point was HRQoL. Secondary end points were PFS by RECIST and overall survival (OS).

Results:
Between March 2002 and December 2007, 156 and 82 patients were randomised to chemotherapy and tamoxifen, respectively.
In the chemotherapy arm, a significantly larger proportion of patients experienced a worsening in their social functioning. There was no difference in the proportion of patients experiencing improvement of gastrointestinal symptoms. Median PFS on tamoxifen was 8.3 weeks (95% CI, 8.0–10.4) compared with 12.7 weeks (95% CI, 9.0–16.3) on chemotherapy (HR, 1.54; 95% CI, 1.16–2.05; log-rank P=0.003). There was no difference in OS between the treatment arms.

Conclusions:
Patients on chemotherapy had longer PFS but experienced more toxicity and poorer HRQoL compared with tamoxifen. Control over gastrointestinal symptoms was not better on chemotherapy. These data are important for patient counselling and highlight the need to incorporate HRQoL end points in studies of PROC.

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