RGD Reference Report - Lymphoid gene expression as a predictor of risk of secondary brain tumors. - Rat Genome Database

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Lymphoid gene expression as a predictor of risk of secondary brain tumors.

Authors: Edick, MJ  Cheng, C  Yang, W  Cheok, M  Wilkinson, MR  Pei, D  Evans, WE  Kun, LE  Pui, CH  Relling, MV 
Citation: Edick MJ, etal., Genes Chromosomes Cancer. 2005 Feb;42(2):107-16.
RGD ID: 10002773
Pubmed: PMID:15543619   (View Abstract at PubMed)
DOI: DOI:10.1002/gcc.20121   (Journal Full-text)

Gene expression profiles are tissue-specific but may also reflect germ-line-driven expression patterns across tissue types. Previously, using a targeted pharmacologic approach, we identified germ-line polymorphisms in a single gene (thiopurine methyltransferase) associated with the risk of irradiation- and chemotherapy-induced secondary brain tumors in children with acute lymphoblastic leukemia (ALL). To identify additional candidate genetic risk factors, in identically treated patients, we compared the gene expression profiles of diagnostic ALL blasts of those who did develop irradiation-associated brain tumors (n = 9) with the profiles from those who did not (n = 33). Weighted rank regression was used to identify 33 probe sets associated with the time-dependent development of brain tumors; k-means clustering (k = 2) identified 2 groups that differed significantly in cumulative incidence of brain tumors (P = 0.012). Permutation analysis was used to estimate the probability (P = 0.18) of obtaining 2 such clusters by chance. Linear discriminant analysis (time-independent categorization of outcome) was used to identify 70 probe sets whose expression differentiated between the 2 groups of patients. Permutation analyses (n = 1,000) was used to estimate the probability of selecting these probe sets by chance (P = 0.055). Five probe sets were in common between the time-independent and time-dependent methods. The distinguishing genes are involved in neural growth (FGFR1) and in nuclear trafficking (HNRPL, KPNB1). These data suggest that gene expression profiling from accessible tissues may identify targets involved in therapy-related malignancies in unrelated tissues.



RGD Manual Disease Annotations    Click to see Annotation Detail View
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
HNRNPLHumanbrain cancer susceptibilityIEP associated with Precursor Cell Lymphoblastic Leukemia-Lymphoma and mRNA:decreased expression:bone marrow (human)RGD 
HnrnplRatbrain cancer susceptibilityISOHNRNPL (Homo sapiens)associated with Precursor Cell Lymphoblastic Leukemia-Lymphoma and mRNA:decreased expression:bone marrow (human)RGD 
HnrnplMousebrain cancer susceptibilityISOHNRNPL (Homo sapiens)associated with Precursor Cell Lymphoblastic Leukemia-Lymphoma and mRNA:decreased expression:bone marrow (human)RGD 

Objects Annotated

Genes (Rattus norvegicus)
Hnrnpl  (heterogeneous nuclear ribonucleoprotein L)

Genes (Mus musculus)
Hnrnpl  (heterogeneous nuclear ribonucleoprotein L)

Genes (Homo sapiens)
HNRNPL  (heterogeneous nuclear ribonucleoprotein L)


Additional Information