title: Comparison of stem cell sources in the severity of dry eye after allogeneic haematopoietic stem cell transplantation.
abstract: OBJECTIVE
  To compare the incidence and severity of dry eye (DE) after allogeneic haematopoietic stem cell transplantation (HSCT) according to the stem cell source. The authors specifically focused on patients who received bone marrow transplantation (BMT), peripheral blood stem cell transplantation (PBSCT) and cord blood transplantation (CBT).
  
  
  METHODS
  Ninety-nine HSCT recipients who were prospectively followed-up for at least 100 days at Keio University Hospital were recruited. Ophthalmological examinations included evaluation of ocular surface findings and tear dynamics. The data on systemic graft-versus-host disease were collected by chart review.
  
  
  RESULTS
  Of the 99 patients (BMT, 67; PBSCT, 18; CBT, 14), 42 developed DE or showed worsened pre-existing DE after HSCT; 31 (46.3%) BMT group; 8 (44.0%) PBSCT group; and 3 (21.4%) CBT group (p=0.78). The median onset time of DE tended to be later in the PBSCT group (474 days, range 95-1559) than in the BMT (287 days, range 67-1216) or CBT (168 days, range 33-481) group, but the difference was not significant (p=0.23). However, the proportion of patients with severe DE was significantly higher in the PBSCT group (N=7, 87.5%) than in the BMT (N=12, 38.7%) or CBT (N=1, 33.3%) group (p=0.04) and CBT showed the lowest among all three stem cell sources.
  
  
  CONCLUSIONS
  The data in this study suggested that the severity and onset time of DE were affected by the stem cell source. Close attention must be paid to the development of late-onset severe DE in PBSCT recipients.
authors: Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjyuku-ku, Tokyo, Japan.
authors: Miki
authors: M
authors: Uchino
authors: Yoko
authors: Y
authors: Ogawa
authors: Yuichi
authors: Y
authors: Uchino
authors: Takehiko
authors: T
authors: Mori
authors: Shinichiro
authors: S
authors: Okamoto
authors: Kazuo
authors: K
authors: Tsubota
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D036101:Cord Blood Stem Cell Transplantation / Q000009:adverse effects* / Q000379:methods / Q000706:statistics & numerical data; D015352:Dry Eye Syndromes / Q000453:epidemiology / Q000209:etiology* / Q000473:pathology*; D005260:Female; D005500:Follow-Up Studies; D006086:Graft vs Host Disease / Q000453:epidemiology / Q000473:pathology; D019337:Hematologic Neoplasms / Q000628:therapy; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects* / Q000379:methods / Q000706:statistics & numerical data; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D036102:Peripheral Blood Stem Cell Transplantation / Q000009:adverse effects* / Q000379:methods / Q000706:statistics & numerical data; D011446:Prospective Studies; D012720:Severity of Illness Index; D014019:Tissue Donors; D014184:Transplantation, Homologous; D055815:Young Adult