Impact of gender mismatch on corneal graft rejection and rejection-related graft failure in repeat penetrating keratoplasty
Issued Date
2022-10-01
Resource Type
eISSN
19326203
Scopus ID
2-s2.0-85140941487
Pubmed ID
36315482
Journal Title
PLoS ONE
Volume
17
Issue
10 October
Rights Holder(s)
SCOPUS
Bibliographic Citation
PLoS ONE Vol.17 No.10 October (2022)
Suggested Citation
Chuckpaiwong V., Jongkhajornpong P., Rajsirisongsri P., Sontichai V., Nijvipakul S., Lekhanont K. Impact of gender mismatch on corneal graft rejection and rejection-related graft failure in repeat penetrating keratoplasty. PLoS ONE Vol.17 No.10 October (2022). doi:10.1371/journal.pone.0276043 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/86466
Title
Impact of gender mismatch on corneal graft rejection and rejection-related graft failure in repeat penetrating keratoplasty
Author's Affiliation
Other Contributor(s)
Abstract
Purpose To explore the impact of gender mismatch on corneal allograft rejection and rejection-related graft failure in patients with repeat penetrating keratoplasty (PK). Methods A retrospective cohort was conducted at Ramathibodi Hospital, Bangkok, Thailand. Patients with repeat PK and follow-up period of at least 6 months were recruited. Demographic data, pre-operative ocular findings and donor information were collected. Patients were divided into 2 groups according to gender mismatch between donor and recipient (male to female vs others). Survival analysis was performed using the Kaplan-Meier method. The association between risk factors and the outcomes of graft rejection and rejection-related graft failure were analyzed using Cox proportional hazards regression. Results Of 68 patients with repeat PK, 26 patients (38.2%) were gender mismatched. There was no difference in 3-year rejection-free survival and graft survival between patients with gender mismatch and others (p = 0.698 and p = 0.402, respectively). Younger recipients (< 40 years) showed a significantly higher rejection rate compared to older recipients (hazard ratio; HR = 3.14, 95% confidence interval; CI 1.15 to 8.58), while patients with multiple PK (> 2 times) were found to be significantly associated with higher rejection-related graft failure compared to patients with 2 times or less PK (HR = 2.72, 95% CI 1.03 to 7.21). After multivariate analysis, only younger recipients demonstrated a statistical significance on graft rejection (adjusted HR = 2.86, 95% CI 1.04 to 7.84). Conclusions Gender mismatch might not impact corneal graft rejection or rejection-related graft failure in patients with repeat PK. Younger age was found to be a strong factor associated with graft rejection. Gender matching might not be compulsory for repeat PK.