asthma/allergies and genetics

I just saw this article: http://news.healingwell.com/index.php?p=news1&id=527726

It's interesting how a particular symptom of asthma (airway hyperresponsiveness, AHR) is inherited mostly from the father's side. That's so interesting. I've never really asked my dad about his asthma history but I think I will now! I also have sinusitis which is unique in my family, though my dad has seasonal allergies. I wonder if it's all linked in the end.

I also ran across this article recently: http://www.rtmagazine.com/respiratoryreport/2007-11-15_10.asp

It's more of a snippet than a real article but it says there's a new genetics test for people with asthma, called Asthmagen. If you read the company's website, it says that up to 15% of people with asthma don't benefit from medications with albuterol? Sounds like a lot! I read the summaries of some of the actual scientific studies (here's one: http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&dopt=AbstractPlus&list_uids=15500895) and although they are kind of dense, it really makes me wonder.

I'm thinking of doing this asthmagen test. Has anyone else heard of it? or tried it?