ACE and chronic kidney disease: We performed PubMed and Google scholar searches for English, peer-reviewed studies related to “COVID-19,” “ADPKD,” “CKD,” “tolvaptan,” “angiotensin-converting enzyme inhibitors” (ACEi), “angiotensin receptor blockers” (ARB), and “vaccination.” We also evaluated transplant data provided by the Ontario Trillium Gift of Life Network.