Abstract BACKGROUND AND AIMS Chronic kidney disease (CKD) is considered as a high-stress disease for patients, because of severe morbidity, chronicity and its life-long treatment often requiring dedicated family care. Caregivers’ burden is considered a multidimensional bio-psychosocial reaction of great importance both for caregivers’ and CKD patients’ Quality of Life (QoL). Kidney transplantation (KT) has been shown to improve patient's QoL, however the effect of KT on family's burden in comparison with dialysis has not been sufficiently studied. Aim of this cross-sectional, multicentre, observational study was to estimate and compare the QoL and burden between family caregivers of dialysis patients versus KT recipients (KTRs). METHOD We included 138 caregivers of dialysis patients and 33 of KTRs. We assessed caregivers’ QoL with SF-36 questionnaire and bio-psychosocial burden with Zarit Burden Interview scale (ZBI). RESULTS Mean age of caregivers did not differ between the two groups (56y dialysis versus 58y KTRs). The majority of KTRs (57.6%) and dialysis patients’ caregivers (68.1%) were women of whom 73% and 52% were spouses, respectively. Educational level and financial status did not differ between the two groups of caregivers. The results of the SF-36 and ZBI are comparatively presented in the Table 1. Dialysis patients’ caregivers had worse QoL compared with KTRs caregivers. There was a statistically significant difference in general health, bodily pain and social functioning role among KTRs versus dialysis caregivers. Dialysis caregivers showed a significantly higher burden in 3 sub-dimensions of ZBI (personal strain, role strain, relational deprivation) compared with KTRs caregivers. Moreover, the burden of KTRs caregivers found to be inverse correlated with educational level (P = 0.01), while in dialysis caregivers, older age, female gender and low income were directly associated with burden (P < 0.001, P = 0.019 and P = 0.005, respectively). CONCLUSION The caregivers of dialysis patients showed worse QoL and significantly higher burden compared with KTRs caregivers. Further studies of larger size will probably shed light to the potential benefits of ΚΤ in patients’ caregivers and families. Currently, implementation of programs for psychological support in high burdened caregivers of kidney disease patients’ could be of help.