Marijuana use should not preclude consideration for kidney transplantation

Area of Science:

• Nephrology
• Transplantation Immunology
• Substance Use Research

Background:

• Transplant center policies on marijuana and tobacco use vary.
• Understanding the impact of substance use on kidney transplant outcomes is crucial.

Purpose of the Study:

• To compare the effects of marijuana and tobacco use on kidney transplant recipient outcomes.
• To evaluate graft loss, infection, acute rejection, and kidney function based on substance use.

Main Methods:

• Retrospective review of 919 kidney transplant recipients (2001-2015).
• Categorization into four groups: marijuana-only, marijuana and tobacco, tobacco-only, and nonusers.
• Analysis of outcomes including graft loss, infection, acute rejection, and estimated glomerular filtration rate.

Main Results:

• No significant association between smoking status and acute rejection, estimated glomerular filtration rate, or pneumonia.
• Combined marijuana and tobacco use and tobacco-only use were linked to increased graft loss risk.
• Isolated marijuana use showed similar graft survival rates compared to nonusers.

Conclusions:

• Tobacco use, alone or with marijuana, increases kidney transplant graft loss.
• Isolated marijuana use does not appear to negatively impact kidney transplant outcomes.
• Marijuana use should not be an absolute contraindication for kidney transplantation eligibility.