Screening Fanconi anemia lymphoid cell lines of non-A, C, D2, E, F, G subtypes for defects in BRCA2/FANCD1

H. Popp, R. Kalb, A. Fischer, S. Lobitz, I. Kokemohr, H. Hanenberg, D. Schindler

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Biallelic mutations in BRCA2/FANCD1 were recently recognized as a rare cause of Fanconi anemia (FA). Using immunodetection with an antiserum directed against the carboxyterminus of the BRCA2 protein, we screened 38 lymphoid cell lines from FA patients whom we could not previously assign, via retroviral complementation analysis, to any of six known FA complementation groups (FA-A, -C, -D2, -E, -F, or -G). Three of these 38 cell lines lacked the 380-kDa BRCA2 signal on immunoblots. DNA sequencing showed biallelic compound and truncating mutations in two of the immuno-negative cell lines, whereas a monoallelic frameshift mutation and an amino acid substitution were detected in the third cell line. Our data show that less than 10% of unassigned FA cell lines harbor truncating mutations in BRCA2/FANCD1. This finding strongly suggests the existence of (an) additional, as yet unknown FA gene(s).

Original languageEnglish (US)
Pages (from-to)54-57
Number of pages4
JournalCytogenetic and Genome Research
Volume103
Issue number1-2
DOIs
StatePublished - Dec 1 2003

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ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Genetics(clinical)

Cite this

Popp, H., Kalb, R., Fischer, A., Lobitz, S., Kokemohr, I., Hanenberg, H., & Schindler, D. (2003). Screening Fanconi anemia lymphoid cell lines of non-A, C, D2, E, F, G subtypes for defects in BRCA2/FANCD1. Cytogenetic and Genome Research, 103(1-2), 54-57. https://doi.org/10.1159/000076289