Now this is a subject I know a lot about; both of my daughters
would have been considered carriers just 10 years ago. What
they now know is that CF is not the clear cut recessive disease it
was once thought to be. Certain heterozygotes, like my
daughters, do develop CF and/or CF-related symptoms. These
can range from what you describe (sinusitis), to "mild"
CF, to very serious cases. This range is a result of
what the scientific literature calls "modifier genes";
these are other genes that interact with the gene that produces the
CFTR protein that, in people with CF, is defective.<br>
<br>
The research on people in this category is only beginning. We have
heard of a doctor in Boston that specializes in these kinds of
cases, but in general it seems largely something that is still on
the research level. One of our frustrations is that the
answers to most of our questions about it is "we just don't
know" or "we will only know in hindsight."<br>
<br>
What I can tell you with great certainty is that having only one of
the CF genes can, contrary to the old way of thinking,
impact health, especially in relation to respiratory and sinus
issues. However, it is also true that a very large number (I
would assume a very large majority) will not experience any
serious, life-shortening effects. There are a smaller number
who, due to the effects of various and largely unknown gene
modifiers, do develop significant health problems, consistent with
CF. For this reason, there has been discussion in some
medical research journals about a label for this 'in-between'
condition. Some use the term "mild", atypical,
abnormal, or non-classic CF. but since even homozygous
CFers can be "mild", the term CFTR-related seems to be
one emerging alternative. But this is really a discussion
that is just beginning at the research level. I was only able
to find a handful of research studies, and they were all in the
past 5 years or so.<br>
<br>
From what you describe, I would think you would be considered as a
good candidate for the CFTR-related conditions category.