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Re: Trisomy 9From: Allen Gardner (allen.gardner@utoronto.ca)Wed Jun 12 11:18:21 1996
Trisomy 9 is pretty rare. I wouldn't be inclined to suggest an increased recurrance risk, unless you believe that meiotic non-disjunction of one chromosome increases the risk of non-disjunction in others. This has been shown for chrom 21 but it hasn't been shown for other chroms. However I would offer MSS and have a thorough discussion of risks and benefits of amnio. I would make amnio and/or level 2 available but I think this would be a reassurance exercise. Allen. H. Allen Gardner MD Genetics Oshawa General Hospital 24 Alma Street Oshawa, Ontario L1G 2B9 ================================================ On Wed, 12 Jun 1996 09:44:48 -0400 DoctorJoe@aol.com wrote:
> From: DoctorJoe@aol.com> Date: Wed, 12 Jun 1996
09:44:48 -0400
> Subject: Re: Trisomy 9
significant for her
> first child carrying the diagnosis of Trisomy 9
have had normal
> karyotypes.>>
3% or so? I would say
> that is greater than the "quoted" 1/200 risk of
amnio...
>
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