title: Patient gender is associated with distinct patterns of chromosomal abnormalities and sex chromosome linked gene-expression profiles in meningiomas.
abstract: The female predominance of meningiomas has been established, but how this is affected by hormones is still under discussion. We analyzed the characteristics of meningiomas from male (n = 53) and female (n = 111) patients by interphase fluorescence in situ hybridization (iFISH). In addition, in a subgroup of 45 (12 male and 33 female) patients, tumors were hybridized with the Affymetrix U133A chip. We show a higher frequency of larger tumors (p = .01) and intracranial meningiomas (p = .04) together with a higher relapse rate (p = .03) in male than in female patients. Male patients had a higher percentage of del(1p36) (p < .001), while loss of an X chromosome was restricted to tumors from female patients (p = .008). In turn, iFISH studies showed a higher frequency of chromosome losses, other than monosomy 22 alone, in meningiomas from male patients (p = .002), while female patients displayed a higher frequency of chromosome gains (p = .04) or monosomy 22 alone (p = .03) in the ancestral tumor clone. Interestingly, individual chromosomal abnormalities had a distinct impact on the recurrence-free survival rate of male versus female patients. In turn, gene expression showed that eight genes (RPS4Y1, DDX3Y, JARID1D, DDX3X, EIF1AY, XIST, USP9Y, and CYorf15B) had significantly different expression patterns (R(2) > 0.80; p < .05) in tumors from male and female patients. In summary, we show the existence of different patterns of chromosome abnormalities and gene-expression profiles associated with patient gender, which could help to explain the slightly different clinical behavior of these two patient groups.
authors.affiliation: Unidad de Investigación, IECSCYL- Hospital Universitario de Salamanca, Paseo de San Vicente 58, 3Salamanca, Spain. taberner@usal.es
authors.forename: María Dolores
authors.initials: MD
authors.lastname: Tabernero
authors.forename: Ana Belén
authors.initials: AB
authors.lastname: Espinosa
authors.forename: Angel
authors.initials: A
authors.lastname: Maillo
authors.forename: Olinda
authors.initials: O
authors.lastname: Rebelo
authors.forename: Jaime Fernandez
authors.initials: JF
authors.lastname: Vera
authors.forename: José María
authors.initials: JM
authors.lastname: Sayagues
authors.forename: Marta
authors.initials: M
authors.lastname: Merino
authors.forename: Pedro
authors.initials: P
authors.lastname: Diaz
authors.forename: Pablo
authors.initials: P
authors.lastname: Sousa
authors.forename: Alberto
authors.initials: A
authors.lastname: Orfao
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000235:genetics / Q000378:metabolism; D005260:Female; D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D007399:Interphase; D008297:Male; D008577:Meningeal Neoplasms / Q000235:genetics* / Q000473:pathology; D008579:Meningioma / Q000235:genetics* / Q000473:pathology; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000473:pathology; D020411:Oligonucleotide Array Sequence Analysis; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D012334:RNA, Neoplasm / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012729:Sex Chromosome Aberrations; D012730:Sex Chromosomes / Q000235:genetics* / Q000648:ultrastructure; D012737:Sex Factors
chemical_list: D014408:Biomarkers, Tumor; D012333:RNA, Messenger; D012334:RNA, Neoplasm