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Doctor insights on: Prader Willi Syndrome Genetics Birth Defects

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Is prader willi syndrome hereditary?

Is prader willi syndrome hereditary?

Not typically: Prader willi is most commonly a random genetic abnormality that occurs early in development of fetus. There is usually no history of the disease in the family. ...Read more

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Genetic (Definition)

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


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What is prader willi syndrome?

A genetic disorder: Usually from a deletion of a gene on the chromosome 15 inherited from the father, it can also come from having both chr 15's from the mother or both acting as if they came from mother. Infants have low muscle tone & trouble gaining weight; food craving & weight gain start about 18 mos. They have congenital anomalies, intellectual disability, compulsive behavior, & medical problems due to obesity. ...Read more

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How is the genetic abnormality patau syndrome inherited?

How is the genetic abnormality patau syndrome inherited?

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 more

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Is kabuki syndrome genetic?

Is kabuki syndrome genetic?

Kabuki syndrome: is a genetically inherited disorder. Here is a link for more information, resources and support: http://ghr.nlm.nih.gov/condition/kabuki-syndrome ...Read more

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Is clinodactyly a genetic disorder, birth defect?

Is clinodactyly a genetic disorder, birth defect?

Yes, but .....: Clinodactyly is a curve of one or more fingers, which is pretty common, especially for the pinkies, and no big deal at all. Technically it's a minor birth defect and usually not a sign of any problem. But sometimes it's one component of a rare genetic syndrome, like wahab syndrome (http://omim.Org/entry/615170) or a more common one, like down syndrome. I have a little clinodactyly myself! ...Read more

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Hows patau syndrome inherited?

Hows patau syndrome inherited?

Not inherited: Patau syndrome, or trisomy 13, is not inherited, in that a baby does not "get it" from either parent. It is usually caused when the egg does not divide properly at the time of fertilization. This accident causes a baby to get an extra number 13 chromosome in every one of its cells. Trisomy 13 is rare, but a very serious condition. Most babies with it die before birth or shortly after birth. ...Read more

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Is turners syndrome a genetic disorder?

Is turners syndrome a genetic disorder?

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

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What chromosomal mutation results in alagille syndrome?

What chromosomal mutation results in alagille syndrome?

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 more

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Is marfan's syndrome a genetic mutation?

Is marfan's syndrome a genetic mutation?

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 more

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What are features of prader willi syndrome ?

H3O: Hyperphagia (voracious appetite), hypotonia (low muscle tone), hypopigmentation (light colored), and obesity are classic pictures of prader-willi syndrome. ...Read more

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Does aneuploidy cause Marfan syndrome?

Does aneuploidy cause Marfan syndrome?

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 more

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Can FAS (fetal alcohol syndrome) be inherited?

Can FAS (fetal alcohol syndrome) be inherited?

Yes and no.: The predisposition for alcoholism is inherited, however fetal alcohol syndrome only occurs when the fetus is exposed to maternally ingested alcohol during pregnancy and as such is not inherited, rather is a teratogen exposure that is entirely preventable. ...Read more

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Is hemophilia linked to patau syndrome?

Is hemophilia linked to patau syndrome?

No, not linked.: Hemophilia a and hemophilia b are caused by mutations in genes f8 and f9, respectively, on the x chromosome. Patau syndrome results from trisomy 13 (the presence of an extra #13 chromosome). ...Read more

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Does the Asperger syndrome have xyy chromosome?

Does the Asperger syndrome have xyy chromosome?

Not by definition: Someone with xyy may has asperger's disorder but that is not part of the disorder itself. ...Read more

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Is paraneoplastic syndrome genetic?

Is paraneoplastic syndrome genetic?

No: There is no genetic relationship to the development of a paraneoplastic syndrome. ...Read more

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What causes turner syndrome, noonan syndrome, & the rare klippel-fell syndrome? What happens during fetal development that causes these conditions?

What causes turner syndrome, noonan syndrome, & the rare klippel-fell syndrome? What happens during fetal development that causes these conditions?

A genetic accident: During formation of the egg or sperm can leave out an x chromosome in either one. A fetus whose genetic make-up includes the germ cell missing a chr. X has turner syndrome. One of 8 different genetic mutations is passed on to a fetus by 1 parent or happens spontaneously to cause noonan syndrome. 2 related genetic mutations are passed on to the fetus by 1 parent to cause klippel-feil syndrome. ...Read more

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Is williams syndrome a gene or chromosomal mutation ?

Is williams syndrome a gene or chromosomal mutation ?

Microdeletion: Williams syndrome is caused by small loss (deletion) of genetic material from long arm of chromosome number 7. ...Read more

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Is treacher collins syndrome a genetic disease?

Is treacher collins syndrome a genetic disease?

Yes: In some patients it is a new mutation, while in others it is passed down from a parent. ...Read more

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Dr. Nikolaos Zacharias
841 doctors shared insights

Congenital Abnormalities (Definition)

Abnormalites that are present at birth. Also known as birth defects. For example- cleft palate is a congenital abnormalities. Another example congenital heart disease is the presence of a ...Read more


Dr. Nikolaos Zacharias
480 doctors shared insights

Birth Defects (Definition)

A physical or biochemical abnormality that is present at birth- it may be inherited or ...Read more