bozhenka Forum Senior
Topics: 1 Posts: 122
| | 11/30/04 - 05:21 AM  
 
   
 
|   #2 |
IT'S X-LINKED - so, all males are affected, and female if she heterozygous show no physical signs other than early menopause, but they may have learning difficulties or frank retardation.
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| mjl1717 Forum Hero

Topics: 955 Posts: 5,450
| | 11/30/04 - 07:24 AM  
 
   
 
|   #3 |
Id say x-linked recessive ***X-link dominant is rare, I only know of hypophosphatemia and Vit D dependent rickets.
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| DiaHuq Forum Elite
Topics: 46 Posts: 402
| | 11/30/04 - 07:33 AM  
 
   
 
|   #4 |
actually 30-50%of female carriers who have the full mutation(>240 repeats) will have mental retardation,so even in robbins in one place it says SXD while in another SXR,in the text it says variable inheritance but x-linked.
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| mjl1717 Forum Hero

Topics: 955 Posts: 5,450
| | 11/30/04 - 03:23 PM  
 
   
 
|   #5 |
In this case of ambiguity, I wouldnt worry if anything i could see the usmle just having multiple choice with: autosomal dominant """""""" recessive mitochondrial x -linked y- linked multifactorial Ill return with more info.
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| indlaxman Forum Elite
Topics: 68 Posts: 159
| | 12/07/04 - 11:49 AM  
 
   
 
|   #6 |
YES you r right many books says it SXD AND SOME S says it is SXR I WILL GO W/ SXD .DiaHuq
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| adeelmd Forum Elite
Topics: 40 Posts: 399
| | 12/08/04 - 10:53 PM  
 
   
 
|   #7 |
alport is also x-linked dominant... (plus vit d res and fragile x)... doubtful they would ask it on step one, but at least it helps remeber that these diseases are xlinked
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