Frailty and sarcopenia within the earliest national Dutch childhood cancer survivor cohort (DCCSS-LATER): a cross- sectional study

Abstract

Background: Childhood cancer survivors appear to be at increased risk of frailty and sarcopenia, but evidence on the occurrence of and high-risk groups for these aging phenotypes is scarce, especially in European survivors. The aim of this cross-sectional study was to assess the prevalence of and explore risk factors for pre-frailty, frailty, and sarcopenia in a national cohort of Dutch childhood cancer survivors diagnosed between 1963 and 2001.Methods: Eligible individuals (alive at the time of study, living in the Netherlands, age 18-45 years, and had not previously declined to participate in a late-effects study) from the Dutch Childhood Cancer Survivor Study (DCCSS-LATER) cohort were invited to take part in this cross-sectional study. We defined pre-frailty and frailty according to modified Fried criteria, and sarcopenia according to the European Working Group on Sarcopenia in Older People 2 definition. Associations between these conditions and demographic and treatment-related as well as endocrine and lifestyle-related factors were estimated with two separate multivariable logistic regression models in survivors with any frailty measurement or complete sarcopenia measurements. Findings: 3996 adult survivors of the DCCSS-LATER cohort were invited to participate in this cross-sectional study. 1993 non-participants were excluded due to lack of response or a decline to participate and 2003 (50.1%) childhood cancer survivors aged 18-45 years were included. 1114 (55.6%) participants had complete frailty measurements and 1472 (73.5%) participants had complete sarcopenia measurements. Mean age at participation was 33.1 years (SD 7.2). 1037 (51.8%) participants were male, 966 (48.2%) were female, and none were transgender. In survivors with complete frailty measurements or complete sarcopenia measurements, the percentage of pre-frailty was 20.3% (95% CI 18.0-22.7), frailty was 7.4% (6.0-9.0), and sarcopenia was 4.4% (3.5-5.6). In the models for pre-frailty, underweight (odds ratio [OR] 3.38 [95% CI 1.92-5.95]) and obesity (OR 1.67 [1.14-2.43]), cranial irradiation (OR 2.07 [1.47-2.93]), total body irradiation (OR 3.17 [1.77-5.70]), cisplatin dose of at least 600 mg/m2 (OR 3.75 [1.82-7.74]), growth hormone deficiency (OR 2.25 [1.23-4.09]), hyperthyroidism (OR 3.72 [1.63-8.47]), bone mineral density (Z score <=-1 and >-2, OR 1.80 [95% CI 1.31-2.47]; Z score <=-2, OR 3.37 [2.20-5.15]), and folic acid deficiency (OR 1.87 [1.31-2.68]) were considered significant. For frailty, associated factors included age at diagnosis between 10-18 years (OR 1.94 [95% CI 1.19-3.16]), underweight (OR 3.09 [1.42-6.69]), cranial irradiation (OR 2.65 [1.59-4.34]), total body irradiation (OR 3.28 [1.48-7.28]), cisplatin dose of at least 600 mg/m2 (OR 3.93 [1.45-10.67]), higher carboplatin doses (per g/m2; OR 1.15 [1.02-1.31]), cyclophosphamide equivalent dose of at least 20 g/m2 (OR 3.90 [1.65-9.24]), hyperthyroidism (OR 2.87 [1.06-7.76]), bone mineral density Z score <=-2 (OR 2.85 [1.54-5.29]), and folic acid deficiency (OR 2.04 [1.20-3.46]). Male sex (OR 4.56 [95%CI 2.26-9.17]), lower BMI (continuous, OR 0.52 [0.45-0.60]), cranial irradiation (OR 3.87 [1.80-8.31]), total body irradiation (OR 4.52 [1.67-12.20]), hypogonadism (OR 3.96 [1.40-11.18]), growth hormone deficiency (OR 4.66 [1.44-15.15]), and vitamin B12 deficiency (OR 6.26 [2.17-1.81]) were significantly associated with sarcopenia. Interpretation: Our findings show that frailty and sarcopenia occur already at a mean age of 33 years in childhood cancer survivors. Early recognition and interventions for endocrine disorders and dietary deficiencies could be important in minimising the risk of pre-frailty, frailty, and sarcopenia in this population. Copyright (C) 2023 The Author(s). Published by Elsevier Ltd.