Abstract
We have described the study of a small kindred with X-linked hemophilia A. It was ascertained through a clinically affected female, the daughter of a man with moderately severe hemophilia. The pedigree and the proband's phenotype suggest that she may be a heterozygote in whom most of the normal alleles at the VIII-1 locus are not active. She has two sisters, also obligatory carriers. The three sisters exhibit the three phenotypes possible for heterozygous females: clinically affected, clinically normal but phenotypically abnormal as determined by laboratory tests, and clinically and phenotypically normal.
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Selected References
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- Allain J. P., Cooper H. A., Wagner R. H., Brinkhous K. M. Platelets fixed with paraformaldehyde: a new reagent for assay of von Willebrand factor and platelet aggregating factor. J Lab Clin Med. 1975 Feb;85(2):318–328. [PubMed] [Google Scholar]
- Barrow E. M., Amos S. M., Heindel C., Graham J. B. Separation of the antihemophilic factor (F. 8) from fibrinogen with thrombin and manganese chloride. Proc Soc Exp Biol Med. 1966 Apr;121(4):1001–1005. doi: 10.3181/00379727-121-30948. [DOI] [PubMed] [Google Scholar]
- Barrow E. M., Graham J. B. Blood coagulation factor VIII (antihemophilic factor): with comments on von Willebrand's disease and Christmas disease. Physiol Rev. 1974 Jan;54(1):23–74. doi: 10.1152/physrev.1974.54.1.23. [DOI] [PubMed] [Google Scholar]
- Bennett B., Ratnoff O. D. Detection of the carrier state for classic hemophilia. N Engl J Med. 1973 Feb 15;288(7):342–345. doi: 10.1056/NEJM197302152880704. [DOI] [PubMed] [Google Scholar]
- Czapek E. E., Hoyer L. W., Schwartz A. D. Hemophilia A in a female: use of factor 8 antigen levels as a diagnostic aid. J Pediatr. 1974 Apr;84(4):485–489. doi: 10.1016/s0022-3476(74)80665-7. [DOI] [PubMed] [Google Scholar]
- Elston R. C., Graham J. B., Miller C. H., Reisner H. M., Bouma B. N. Probabilistic classification of hemophilia A carriers by discriminant analysis. Thromb Res. 1976 May;8(5):683–695. doi: 10.1016/0049-3848(76)90248-6. [DOI] [PubMed] [Google Scholar]
- Graham J. B., Barrett D. A., 2nd, Blombäck B., Cann H. M., Hardisty R. M., Larrieu M. J., Renwick J. H. A genetic nomenclature for human blood coagulation. Thromb Diath Haemorrh. 1973 Sep 15;30(1):2–11. [PubMed] [Google Scholar]
- Graham J. B., Barrow E. S., Elston R. C. Lyonization in hemophilia: a cause of error in direct detection of heterozygous carriers. Ann N Y Acad Sci. 1975 Jan 20;240:141–146. doi: 10.1111/j.1749-6632.1975.tb53335.x. [DOI] [PubMed] [Google Scholar]
- Graham J. B., Barrow E. S., Roberts H. R., Webster W. P., Blatt P. M., Buchanan P., Cederbaum A. I., Allain J. P., Barrett D. A., Gralnick H. R. Dominant inheritance of hemophilia A in three generations of women. Blood. 1975 Aug;46(2):175–188. [PubMed] [Google Scholar]
- LANGDELL R. D., WAGNER R. H., BRINKHOUS K. M. Effect of antihemophilic factor on one-stage clotting tests; a presumptive test for hemophilia and a simple one-stage antihemophilic factor assy procedure. J Lab Clin Med. 1953 Apr;41(4):637–647. [PubMed] [Google Scholar]
- Laurell C. B. Quantitative estimation of proteins by electrophoresis in agarose gel containing antibodies. Anal Biochem. 1966 Apr;15(1):45–52. doi: 10.1016/0003-2697(66)90246-6. [DOI] [PubMed] [Google Scholar]
- Révész T., Schuler D., Goldschmidt B., Elödi S. Christmas disease in one of a pair of monozygotic twin girls, possibly the effect of lyonization. J Med Genet. 1972 Dec;9(4):396–400. doi: 10.1136/jmg.9.4.396. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sarji K. E., Stratton R. D., Wagner R. H., Brinkhous K. M. Nature of von Willebrand factor: a new assay and a specific inhibitor. Proc Natl Acad Sci U S A. 1974 Aug;71(8):2937–2941. doi: 10.1073/pnas.71.8.2937. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Zimmerman T. S., Ratnoff O. D., Littell A. S. Detection of carriers of classic hemophilia using an immunologic assay for antihemophilic factor (factor 8(). J Clin Invest. 1971 Jan;50(1):255–258. doi: 10.1172/JCI106481. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Zimmerman T. S., Ratnoff O. D., Powell A. E. Immunologic differentiation of classic hemophilia (factor 8 deficiency) and von Willebrand's dissase, with observations on combined deficiencies of antihemophilic factor and proaccelerin (factor V) and on an acquired circulating anticoagulant against antihemophilic factor. J Clin Invest. 1971 Jan;50(1):244–254. doi: 10.1172/JCI106480. [DOI] [PMC free article] [PubMed] [Google Scholar]