Abstract The age-adjusted International Prognostic Index (IPI) is an important prognostic factor for patients with non-Hodgkin lymphoma (NHL). We investigated whether a geriatric assessment (GA) is of additional prognostic value in NHL. In this prospective cohort study of 44 patients aged 70 years or older with NHL receiving R-CHOP, a GA was administrated before the start of chemotherapy. GA was composed of Mini Nutritional Assessment (MNA), Groningen Frailty Indicator (GFI), Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE), Mini Mental State Examination (MMSE) and levels of albumin, creatinine, lactate-dehydrogenase (LDH) and hemoglobin. Multivariate analyses were performed using logistic regression and the cox regression model. After adjustment for sex, age, comorbidity and univariate laboratory values with p ≤ 0.1, abnormal MNA and GFI scores and low hemoglobin level were associated with not being able to complete the intended chemotherapy: odds ratio (OR) 8.29 (95% confidence interval [CI]: 1.24-55.6; p=0.03), 9.17 (95% CI: 1.51-55.8; p=0.02) and 5.41 (95% CI: 0.99-29.8; p=0.05), respectively. Adjusted for sex, age, comorbidity, age-adjusted IPI and univariate laboratory values with p ≤ 0.1, frailty by GFI and low hemoglobin were associated with worse survival with hazard ratio (HR) of mortality of 2.55 (95% CI: 1.07-6.10; p=0.04) and 4.90 (95% CI: 1.76-13.7; p=0.002), respectively. We conclude that (risk of) malnutrition, measured with the MNA, frailty, measured with the GFI, and low hemoglobin level had additional predictive value for early treatment withdrawal, and GFI and hemoglobin were, independent of the age-adjusted IPI, predictive for an increased mortality risk.