[Familial cytogenetic studies in Balkan endemic nephropathy. II].

Twenty clinically healthy relatives were studied of patients with Balkan endemic nephropathy via high resolutive chromosome analysis. Dynamic deviations in G-band structure of third chromosome was established in 10 of the subjects studied, namely--shortening of the band 3q25 and a faster fusion of subbands 3q26.1 and 3q26.3, not corresponding to the stage of chromosomal contraction. A complete coincidence was obtained between the carriership if marker chromosome A3 and the data from the biopsy studies, revealing initial morphological changes in the kidney, characteristic for Balkan endemic nephropathy.