Cystatin C and Cardiovascular Disease: A Mendelian Randomization Study

Sander W van der Laan, Tove Fall, Aicha Soumaré, Alexander Teumer, Sanaz Sedaghat, Jens Baumert, Delilah Zabaneh, Jessica van Setten, Ivana Isgum, Tessel E Galesloot, Johannes Arpegård, Philippe Amouyel, Stella Trompet, Melanie Waldenberger, Marcus Dörr, Patrik K Magnusson, Vilmantas Giedraitis, Anders Larsson, Andrew P Morris, Janine F FelixAlanna C Morrison, Nora Franceschini, Joshua C Bis, Maryam Kavousi, Christopher O'Donnell, Fotios Drenos, Vinicius Tragante, Patricia B Munroe, Rainer Malik, Martin Dichgans, Bradford B Worrall, Jeanette Erdmann, Christopher P Nelson, Nilesh J Samani, Heribert Schunkert, Jonathan Marchini, Riyaz S Patel, Aroon D Hingorani, Lars Lind, Nancy L Pedersen, Jacqueline de Graaf, Lambertus A L M Kiemeney, Sebastian E Baumeister, Oscar H Franco, Albert Hofman, André G Uitterlinden, Wolfgang Koenig, Christa Meisinger, Annette Peters, Barbara Thorand, J Wouter Jukema, Bjørn Odvar Eriksen, Ingrid Toft, Tom Wilsgaard, N Charlotte Onland-Moret, Yvonne T van der Schouw, Stéphanie Debette, Meena Kumari, Per Svensson, Pim van der Harst, Mika Kivimaki, Brendan J Keating, Naveed Sattar, Abbas Dehghan, Alex P Reiner, Erik Ingelsson, Hester M den Ruijter, Paul I W de Bakker, Gerard Pasterkamp, Johan Ärnlöv, Michael V Holmes, Folkert W Asselbergs

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

BACKGROUND: Epidemiological studies show that high circulating cystatin C is associated with risk of cardiovascular disease (CVD), independent of creatinine-based renal function measurements. It is unclear whether this relationship is causal, arises from residual confounding, and/or is a consequence of reverse causation.

OBJECTIVES: The aim of this study was to use Mendelian randomization to investigate whether cystatin C is causally related to CVD in the general population.

METHODS: We incorporated participant data from 16 prospective cohorts (n = 76,481) with 37,126 measures of cystatin C and added genetic data from 43 studies (n = 252,216) with 63,292 CVD events. We used the common variant rs911119 in CST3 as an instrumental variable to investigate the causal role of cystatin C in CVD, including coronary heart disease, ischemic stroke, and heart failure.

RESULTS: Cystatin C concentrations were associated with CVD risk after adjusting for age, sex, and traditional risk factors (relative risk: 1.82 per doubling of cystatin C; 95% confidence interval [CI]: 1.56 to 2.13; p = 2.12 × 10(-14)). The minor allele of rs911119 was associated with decreased serum cystatin C (6.13% per allele; 95% CI: 5.75 to 6.50; p = 5.95 × 10(-211)), explaining 2.8% of the observed variation in cystatin C. Mendelian randomization analysis did not provide evidence for a causal role of cystatin C, with a causal relative risk for CVD of 1.00 per doubling cystatin C (95% CI: 0.82 to 1.22; p = 0.994), which was statistically different from the observational estimate (p = 1.6 × 10(-5)). A causal effect of cystatin C was not detected for any individual component of CVD.

CONCLUSIONS: Mendelian randomization analyses did not support a causal role of cystatin C in the etiology of CVD. As such, therapeutics targeted at lowering circulating cystatin C are unlikely to be effective in preventing CVD.

Original languageEnglish
Pages (from-to)934-945
Number of pages12
JournalJournal of the American College of Cardiology
Volume68
Issue number9
DOIs
Publication statusPublished - 30 Aug 2016

Keywords

  • coronary heart disease
  • genetics
  • heart failure
  • ischemic stroke

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