Doctor insights on:
Genetic Testing And Marfan Syndrome
Yes: Yes it is a mutation in the fbn1 gene on chromosome 15. This gene is responsible for providing the instructions for making a protien called fibrillin which becomes part of microfibrils. Microfibrils are important for providing the strength and flexibility of connective tissue. Connective tissue provides strength and flexibility to bones, ligaments, muscles, blood vessels and heart values. ...Read moreSee 1 more doctor answer
Prenatal testing for genetic problems may be done before or after conception. Testing for spina bifida or Down syndrome is done after a pregnancy is established. Besides the couples listed above, counseling and diagnosis are also recommended for mothers over the age of 35, and those who have received abnormal screening test results, such as alpha-fetoprotein (AFP). For more information about the alpha-fetoprotein test, and when and why you might have it, see alpha-fetoprotein. For those who may be at risk, genetic counseling and prenatal diagnosis are used to help ...Read more
Could preimplantation genetic diagnosis or genetic engineering get rid of diseases like Marfan syndrome?
Yes: Most females are born with 2 x chromosomes. Ts is a disorder resulting from missing one x chromosome or some part of it in the cells of the body. It is a disorder exclusive to females. Those with ts are born with it. Manifestations vary depending on the genetics. Small stature is one feature most girls have in common with each other. ...Read more
No: The two syndromes have some similar features, but they are different syndromes that are unrelated. Klinefelter syndrome is caused by ahaving at least one extra x chromosome in a person who has a y chromosome (normal male=46 xy, klinefelter=47xxy). Typical marfan syndrome is caused by a mutation in fbn1, coding for fibrillin-1. ...Read moreSee 1 more doctor answer
Non-disjunction.: The majority of cases of the lethal patau or trisomy 13 syndrome are caused by nondisjunction (47, +13) related to advanced maternal age. Robertsonian translocations of either parent can increase the risk for that couple, although most affected embryos die in utero. ...Read moreSee 1 more doctor answer
Marfan is caused by : A mutation in the fibrillin gene on the long arm of chromosome 15 , 15q15-q21.3. Autisomal dominant inheritance with widely variable clinical findings. Aneuploidy is having an abnormal # of chromosomes from a genetic accident during cell reduction (meiosis). ...Read moreSee 1 more doctor answer
Clinical diagnosis: Parkinson disease may have genetic basis, but the diagnosis is usually made based on signs and symptoms. See this site for genetic basis of the disease. http://www.ncbi.nlm.nih.gov/pubmed/15503301. ...Read more
Yes: While WPW syndrome is genetic, not every patient behaves or is treated the same way. A good percentage of the WPW population will not need any treatment as they do not have fast heart rates (arrhythmias). At the other end of the spectrum however, live patients with WPW who may need ablation or possibly an icd. The proper course of action is determined by an electrophysiologist usually. ...Read moreSee 1 more doctor answer
ALGS: Alagille syndrome (algs) is a complex multisystem disorder involving primarily the liver, heart, eyes, face, and skeleton. The two genes in which mutations are known to cause algs are jag1 and notch2. Mutations in jag1 are known to cause about 94%-96% of cases of algs. Mutations in notch2 are known to cause algs in 1%-2% of individuals. ...Read moreSee 1 more doctor answer
Is it possible for someone to have a combo of connective tissue disorders such as Marfan syndrome and ehlers danlos syndrome?
Yes, but unlikely: Both Marfan syndrome (see http://www.nhlbi.nih.gov/health/health-topics/topics/mar/) and Ehlers Danlos syndrome (see http://www.nlm.nih.gov/medlineplus/ency/article/001468.htm) are conditions where mutations in proteins that are main components of connective tissue are abnormal which can result in a number of tissue abnormalities and possible health problems.Not likely both conditions at same time ...Read more
From a medical standpoint, "genetic" refers to the potential heritability of various medical conditions. While some conditions are inevitable (at some point in one's life) as a consequence of simple genetic heritability (eg huntington's disease), a large number of medical conditions (including all behaviorial health disorders) are the expressed final pathway of a ...Read more