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. 2022 Jun 6;15(11):2063-2071.
doi: 10.1093/ckj/sfac144. eCollection 2022 Nov.

Flank pain has a significant adverse impact on quality of life in ADPKD: the CYSTic-QoL study

Jean Winterbottom  1   2 , Roslyn J Simms  1   2 , Anna Caroli  3 , Emilie Cornec-Le Gall  4 , Nathalie Demoulin  5 , Monica Furlano  6 , Esther Meijer  7 , Olivier Devuyst  5 , Ron T Gansevoort  7 , Yannick Le-Meur  8 , Norberto Perico  3 , Roser Torra  6 , Albert C M Ong  1   2
Affiliations

Flank pain has a significant adverse impact on quality of life in ADPKD: the CYSTic-QoL study

Jean Winterbottom et al. Clin Kidney J. .

Abstract

Background: Autosomal dominant polycystic kidney disease (ADPKD) is the most common inherited kidney disorder and a major cause of kidney failure worldwide. However, its impact on quality-of-life has not been systematically explored.

Methods: The CYSTic-QoL study was an observational study designed to study quality-of-life in adult European ADPKD patients with an estimated glomerular filtration rate (eGFR) ≥30 mL/min/1.73 m2. A total of 465 patients were recruited from six expert European centres with baseline data recorded, including health-related quality-of-life (HRQoL), incorporating a Kidney Disease QoL short form questionnaire (KDQoL-SF, version 1.3), magnetic resonance imaging (MRI) for total kidney volume (TKV) measurements and DNA for genotyping. The cohort was stratified by baseline eGFR, TKV or genotype and correlated with HRQoL scores. Bivariate and multivariate analyses were applied to examine the relationship between HRQoL and variables of interest. KDQoL-SF scores were calculated using an online tool provided by the RAND organization. For 36-item short form values, mean centre scores were normalized to their native populations.

Results: The mean age of participants was 43 years and 55% were female, with a mean eGFR of 77 mL/min/1.73 m2 and height-adjusted TKV (ht-TKV) of 849 mL/min; 66% had PKD1 pathogenic variants. ADPKD patients uniformly reported decreased general health and less energy, with the majority also experiencing poorer physical, mental or emotional health and limitations in social functioning. A total of 32.5% of participants experienced flank pain, which was significantly and negatively correlated with the majority of KDQoL-SF subscales by multivariate analysis. Higher ht-TKV and lower eGFR were negatively associated with decreased energy and poorer physical health, respectively, although not with flank pain.

Conclusion: ADPKD patients suffer from significantly decreased QoL in multiple domains, exacerbated particularly by chronic pain.

Keywords: ADPKD; kidney function; pain; quality-of-life; total kidney volume.

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Figures

Graphical Abstract
Graphical Abstract
FIGURE 1:
FIGURE 1:
KDQoL-SF scores in patients reporting flank pain (n = 140) and those with no pain (n = 289). Only subscores with significant differences are shown (formula image-axis). formula image-axis scale from 40 to 100.
FIGURE 2:
FIGURE 2:
Individual centre SF-36 mean subscores normalized to population norms for PCS and MCS.
See this image and copyright information in PMC

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