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  • Title: Linkage heterogeneity of end-stage renal disease on human chromosome 10.
    Author: Freedman BI, Rich SS, Yu H, Roh BH, Bowden DW.
    Journal: Kidney Int; 2002 Sep; 62(3):770-4. PubMed ID: 12164858.
    Abstract:
    BACKGROUND: The human syntenic region of the rodent renal failure-1 gene (Rf1), an attractive candidate region for end-stage renal disease (ESRD) susceptibility, is located on chromosome 10q24-q26. In an attempt to assess for linkage between markers on human chromosome 10 and ESRD, we performed a linkage analysis in 356 African American sib pairs concordant for ESRD [199 sib pairs concordant for non-diabetic etiologies (hypertension-associated, chronic glomerulonephritis and unknown) and 157 sib pairs concordant for diabetic ESRD]. METHODS: Linkage was tested between 30 polymorphic markers spanning chromosome 10 and ESRD using GeneHunter software. RESULTS: In all 356 sib pairs, the maximum likelihood ratio z-score (Zlr) occurred near locus D10S677 (Zlr = 3.33, P = 0.0004, lod = 3.40), with a lesser peak near D10S1435 (Zlr = 1.77, P = 0.04, lod = 1.42). The locus at D10S677 contributed significantly to both diabetic ESRD (Zlr = 2.39, P = 0.008, lod = 2.08) and non-diabetic ESRD (Zlr = 2.35, P = 0.009, lod = 2.03). Additionally, the D10S677 peak was observed in both early onset (< or =50 years) and late onset (>50 years) ESRD (Zlr = 2.96, P = 0.002, lod = 2.82 in early onset and Zlr = 1.96, P = 0.03, lod = 1.60 in late onset ESRD families, respectively). The lesser peak at D10S1435 was observed in families with non-diabetic etiologies of ESRD (Zlr = 1.94, P = 0.02, lod = 1.58) and in those with early onset ESRD (Zlr = 1.89, P = 0.03, lod = 1.53). CONCLUSIONS: These results suggest that the region near D10S677, adjacent to the human homolog of the Rf1 gene, contributes to ESRD susceptibility in African Americans. They confirm that the region on 10p, near D10S1435, appears to be involved in early onset, non-diabetic etiologies of ESRD in African Americans.
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