title: The Use of Transcriptional Profiling to Improve Personalized Diagnosis and Management of Cutaneous T-cell Lymphoma (CTCL).
abstract: OBJECTIVE
  Although many patients with mycosis fungoides presenting with stage I disease enjoy an indolent disease course and normal life expectancy, about 15% to 20% of them progress to higher stages and most ultimately succumb to their disease. Currently, it is not possible to predict which patients will progress and which patients will have a stable disease. Previously, we conducted microarray analyses with RT-PCR validation of gene expression in biopsy specimens from 60 patients with stage I-IV cutaneous T-cell lymphoma (CTCL), identified three distinct clusters based upon transcription profile, and correlated our molecular findings with 6 years of clinical follow-up.
  
  
  METHODS
  We test by RT-PCR within our prediction model the expression of about 240 genes that were previously reported to play an important role in CTCL carcinogenesis. We further extend the clinical follow-up of our patients to 11 years. We compare the expression of selected genes between mycosis fungoides/Sézary syndrome and benign inflammatory dermatoses that often mimic this cancer.
  
  
  RESULTS
  Our findings demonstrate that 52 of the about 240 genes can be classified into cluster 1-3 expression patterns and such expression is consistent with their suggested biologic roles. Moreover, we determined that 17 genes (CCL18, CCL26, FYB, T3JAM, MMP12, LEF1, LCK, ITK, GNLY, IL2RA, IL26, IL22, CCR4, GTSF1, SYCP1, STAT5A, and TOX) are able to both identify patients who are at risk of progression and also distinguish mycosis fungoides/Sézary syndrome from benign mimickers.
  
  
  CONCLUSIONS
  This study, combined with other gene expression analyses, prepares the foundation for the development of personalized molecular approach toward diagnosis and treatment of CTCL.
authors.affiliation: Division of Dermatology, McGill University Health Centre, Montréal, Quebec, Canada.
authors.forename: Ivan V
authors.initials: IV
authors.lastname: Litvinov
authors.affiliation: Division of Dermatology, McGill University Health Centre, Montréal, Quebec, Canada.
authors.forename: Elena
authors.initials: E
authors.lastname: Netchiporouk
authors.affiliation: Division of Dermatology, McGill University Health Centre, Montréal, Quebec, Canada.
authors.forename: Brendan
authors.initials: B
authors.lastname: Cordeiro
authors.affiliation: Division of Dermatology, Université Laval, Québec, Canada.
authors.forename: Marc-André
authors.initials: MA
authors.lastname: Doré
authors.affiliation: Division of Dermatology, McGill University Health Centre, Montréal, Quebec, Canada.
authors.forename: Linda
authors.initials: L
authors.lastname: Moreau
authors.affiliation: Division of Dermatology, McGill University Health Centre, Montréal, Quebec, Canada. Division of Dermatology, Jewish General Hospital, Montréal, Quebec, Canada.
authors.forename: Kevin
authors.initials: K
authors.lastname: Pehr
authors.affiliation: Division of Dermatology, Université Laval, Québec, Canada.
authors.forename: Martin
authors.initials: M
authors.lastname: Gilbert
authors.affiliation: Department of Dermatology and Skin Science, The University of British Columbia, Vancouver, British Columbia, Canada.
authors.forename: Youwen
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Division of Dermatology, McGill University Health Centre, Montréal, Quebec, Canada. tkupper@partners.org denis.sasseville@mcgill.ca.
authors.forename: Denis
authors.initials: D
authors.lastname: Sasseville
authors.affiliation: Harvard Skin Disease Research Center, Department of Dermatology, Brigham and Women's Hospital, Harvard University, Boston, Massachusetts. tkupper@partners.org denis.sasseville@mcgill.ca.
authors.forename: Thomas S
authors.initials: TS
authors.lastname: Kupper
mesh_terms: D014408:Biomarkers, Tumor; D019468:Disease Management; D005260:Female; D005500:Follow-Up Studies; D020869:Gene Expression Profiling / Q000379:methods; D015972:Gene Expression Regulation, Neoplastic; D005820:Genetic Testing / Q000379:methods; D023281:Genomics / Q000379:methods; D006801:Humans; D053208:Kaplan-Meier Estimate; D016410:Lymphoma, T-Cell, Cutaneous / Q000175:diagnosis* / Q000235:genetics* / Q000401:mortality; D008297:Male; D057285:Precision Medicine; D011379:Prognosis; D012867:Skin / Q000378:metabolism / Q000473:pathology; D012871:Skin Diseases / Q000235:genetics
chemical_list: D014408:Biomarkers, Tumor