Variable pathogenicity of exon 43del (FAA) in four Fanconi anaemia patients within a consanguineous family


Koc A., Pronk J., Alikasifoglu M., Joenje H., Altay C.

BRITISH JOURNAL OF HAEMATOLOGY, cilt.104, sa.1, ss.127-130, 1999 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 104 Sayı: 1
  • Basım Tarihi: 1999
  • Doi Numarası: 10.1046/j.1365-2141.1999.01156.x
  • Dergi Adı: BRITISH JOURNAL OF HAEMATOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.127-130
  • Anahtar Kelimeler: Fanconi's anaemia group A, genotype, haematological manifestation, phenotype, ANEMIA-REGISTRY, VARIABILITY, DIAGNOSIS
  • Marmara Üniversitesi Adresli: Hayır

Özet

Four Fanconi anaemia group A (FAA) patients within two related consanguineous families are presented: the propositus (male, 13 years, transplanted at age 10), and his three cousins (one male, 8 years, and two female newborns). Assignment of the patients to FAA was based on the functional complementation analysis by somatic cell hybridization and confirmed by mutation screening showing a homozygous deletion of exon 43 (4267-4404del) in the FAA gene to be present in all four patients. The newborn patients had been diagnosed prenatally by DNA analysis. in spite of identical molecular pathology and close familial relationship the clinical phenotypes of the four patients were not concordant. Discordant symptoms included birthweight, pigmentation abnormalities, skeletal, renal and genital abnormalities, whereas microcephaly and possibly the haematological course were concordant. Differences in environmental conditions and/or genetic make-up along with chance effects during development may explain discordant phenotypes despite identical molecular pathology in these patients. However, our results do not rule out the possibility that the exon 43del mutation may have prognostic Value for the haematological course of the disease.