Elderly ovarian cancer patients: An individual participant data meta-analysis of the North-Eastern German Society of Gynecological Oncology (NOGGO).

BACKGROUND: Barriers for optimal treatment and enrolment in clinical trials are the physicians' perceptions towards age, comorbidities and fear of toxicity as well as the eligibility criteria of clinical trials. There is a high need to gain more knowledge about this patient group in order to optimize treatment. We aimed to evaluate the influence of age above 65 years on comorbidities, comedication, grade III/IV toxicity, prior discontinuation of chemotherapy and survival. PATIENTS AND METHODS: An individual participant data meta-analysis of three phase II/III studies ('Tower', 'Topotecan phase III' and 'Hector') of the North-Eastern German Society of Gynecological Oncology including 1213 patients with recurrent ovarian cancer was conducted using logistic regression and Cox regression analysis. RESULTS: Median age at diagnosis was 59 years. The patient group ≥65 years included 349 versus 864 patients younger than 65 years. Cardiovascular disease and diabetes were more frequent in the older age group (p < 0.001 and p = 0.001). Haematological and cardiovascular grade III/IV toxicities were more often seen in patients above 65 years, while non-haematological toxicity was not (p = 0.03, odds ratio [OR] 1.35; p = 0.04, OR 1.83; and p = 0.90, OR 0.98, respectively). There was no difference in prior discontinuation of treatment in multivariate analysis. Cox regression showed a trend towards poorer progression-free survival (p = 0.053, hazard ratio 1.143) in the older age group. CONCLUSION: Haematological and cardiovascular toxicities are more frequent in elderly patients. However, this did not influence prior discontinuation of therapy. Elderly patients should not be deprived of adequate chemotherapy or excluded from clinical studies just because of their age. Thorough geriatric assessment and monitoring is mandatory.

The influence of polypharmacy on grade III/IV toxicity, prior discontinuation of chemotherapy and overall survival in ovarian cancer.

BACKGROUND: Ovarian cancer is mostly diagnosed in the elderly woman who is likely to have comorbid disease and to take several comedications on a regular basis. Aim of this study was to evaluate the influence of polypharmacy on grade III/IV toxicity, prior discontinuation of chemotherapy and survival. PATIENTS AND METHODS: In this individual participant data meta-analysis the original data of three phase II/III studies of the North-Eastern German Society of Gynecological Oncology (NOGGO) were analyzed using multivariate logistic and Cox regression. RESULTS: Overall, 1213 patients with recurrent ovarian cancer were included in these analyses. An increasing amount of medication was associated with overall grade III/IV toxicity (p<0.001; OR 1.120), and hematological (p<0.001; OR 1.056) and non-hematological (p<0.001; OR 1.134) toxicities. Prior discontinuation of chemotherapy was not influenced by an increasing amount of medication (p=0.196). There was no association of polypharmacy with overall survival (p=0.068). CONCLUSION: As polypharmacy does not influence survival ovarian cancer patients taking several comedications may be included in clinical trials and should not be deprived of adequate cancer treatment. However, a thorough monitoring is mandatory due to the increased risk of toxicities.

The influence of comorbidity and comedication on grade III/IV toxicity and prior discontinuation of chemotherapy in recurrent ovarian cancer patients: An individual participant data meta-analysis of the North-Eastern German Society of Gynecological Oncology (NOGGO).

BACKGROUND: Ovarian cancer is usually a cancer of the older age group. Comorbidities and comedications increase with rising age. Aim of this study was to evaluate association of comorbidity and comedication with grade III/IV toxicities and prior cessation of chemotherapy in ovarian cancer patients. PATIENTS AND METHODS: As an individual participant data meta-analysis this study analyzes the original data of three phase II/III chemotherapy studies of the North-Eastern German Society of Gynecological Oncology (NOGGO). Risk scores for certain combinations of risk factors were calculated based on stepwise regression analyses. RESULTS: Altogether, 1213 patients were included in the study. Cardiovascular disease was the most frequent comorbidity (47.5%). In multivariate analyses it was associated with hematological, non-hematological, pulmonary and renal grade III/IV toxicities (p=0.002; p<0.001; p=0.005; p<0.001). Renal toxicity was more frequent when using diuretics and ACE-inhibitors (p<0.001; p=0.002). Prior cessation of therapy was e.g. associated with use of diuretics, insulin and digitalis (p=0.001; p=0.04; p=0.03). The risk for renal grade III/IV toxicities was more than 16 times higher when using both a diuretic and an ACE-inhibitor. CONCLUSIONS: Regimens of ovarian cancer treatment should not be restricted to direct cancer therapy but rather include additional individualized treatment of comorbidities. Comedications such as diuretics increase grade III/IV toxicities and patients at risk should be closely monitored.