Vitamin K supplementation and vascular health after kidney transplantation

To the Editor: We read with interest the article by Lees et al.1 The authors conclude that in their randomized controlled trial in kidney transplant recipients (KTRs), vitamin K supplementation (menadiol diphosphate 5 mg thrice weekly) did not affect aortic distensibility or coronary artery calcium score. Although the authors deserve credit for their “Viktory” of completing this trial, and notwithstanding the relevance to publish null trial...