Testicular CFTR splice variants in patients with congenital absence of the vas deferens

Sara Larriba, Lluis Bassas, Javier Gimenez, Maria D. Ramos, Ana Segura, Virginia Nunes, Xavier P. Estivill, Teresa Casals

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The involvement of the five thymidine (5T) variant in intron 8 of the cystic fibrosis membrane regulator (CFTR) gene in congenital bilateral absence of the vas deferens (CBAVD) phenotype has been extensively demonstrated. This variant leads to alternative splicing of the CFTR gene which results in a wild-type transcript and one without exon 9. Little is known about expression of the CFTR gene in the testis. We analysed the level of the aberrantly spliced transcripts in testicular biopsies and correlated it with disease expression. Quantitative RT-PCR analysis in testicular biopsies from control and CBAVD patients showed a correlation between the length of the IVS8-6(T)(n) tract and the level of alternatively spliced transcripts. Results from histological analysis also suggest an involvement of the alternative transcript in the spermatogenic status of patients, leading to a decreased number of mature sperm forms in the tubule.

Original languageEnglish
Pages (from-to)1739-1744
Number of pages6
JournalHuman Molecular Genetics
Issue number11
Publication statusPublished - Oct 1998
Externally publishedYes


ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Genetics(clinical)

Cite this

Larriba, S., Bassas, L., Gimenez, J., Ramos, M. D., Segura, A., Nunes, V., Estivill, X. P., & Casals, T. (1998). Testicular CFTR splice variants in patients with congenital absence of the vas deferens. Human Molecular Genetics, 7(11), 1739-1744. https://doi.org/10.1093/hmg/7.11.1739