Waardenburg Syndrome is a group of genetic conditions that can lead to hearing loss and changes in the color of hair, skin, and eyes (Genetics 2013). Cases of Waardenburg Syndrome are not very common. There are different types of symptoms of the syndrome. Waardenburg Syndrome can be inherited either on an autosomal dominant pattern or autosomal recessive pattern (Calendar 2013). The ways of diagnosing Waardenburg Syndrome include certain tests to detect the disorder. While Waardenburg Syndrome cannot be cured, treatments can be given to lessen the effects. Like other diseases, Waardenburg Syndrome has certain symptoms, inheritance patterns, diagnosis and treatments.
Waardenburg Syndrome affects a person’s hearing, pigmentation, facial features along with other defects. There are also four different types of Waardenburg Syndrome. The chances of hearing loss can be slim to none, although people with Waardenburg Syndrome can have profound hearing loss (Genetics 2013). Hearing loss can occur in either one or both ears and occurs at birth. People with Waardenburg Syndrome typically have pale blue eyes or even different colored eyes. Those affected can also have white or gray patches of hair at a young age (MedlinePlus 2013). Symptoms and effects of Waardenburg Syndrome appear to be different to each individual person who has the disorder. Some symptoms of Waardenburg Syndrome include pale skin, hair, and eyes, patches of white/gray hair, finger contractures, hearing loss, and different colored eyes (heterochromia). Other symptoms include numerous minor abnormalities and abnormal facial features (MedlinePlus 2013). Some symptoms, such as widely spaced eyes in type I, depend on which type of Waardenburg Syndrome a person is diagnosed w...
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...sorder itself is genetic counseling. In genetic counseling, patients meet with a genetic counselor at a hospital or some sort of other healthcare facility. (Calendar 2013)
Waardenburg Syndrome is a rare genetic disorder meaning that is caused by a mutation of genes. The disorder is classified as type I, II, III, or IV based on inheritance pattern and symptoms (Genetics 2013). Waardenburg Syndrome is an incurable disorder that is inherited from either one or both parents. If it came from one parent, it is an autosomal dominant pattern and if it came from both, it is known as an autosomal recessive pattern (Calendar 2013). Hearing loss, abnormalities with pigmentation of hair, eyes, and skin and other minor defects are some symptoms of Waardenburg Syndrome. There are many ways to diagnose the disorder and many treatments of the symptoms of it as well.
The range and severity of symptoms and findings may be extremely variable, including among affected members of the same family. However, primary findings may include premature closure of the fibrous joints between certain bones of the skull, unusually flat, underdeveloped midfacial regions abnormally broad great toes, and/or malformation or fusion of certain bones within the feet. In some cases, Jackson-Weiss Syndrome may result from new genetic changes that appear to occur randomly for unknown reasons. In other affected individuals, the disorder may be inherited. Mutations in the FGFR2 gene cause Jackson–Weiss syndrome. The FGFR2 gene produces a protein called
Mark started losing his hearing when he was about six or seven years old. This was manifested in confusion in music class, misunderstanding the words that the choir was singing, and discombobulation in noisy rooms. Eventually, it was noted that Mark’s hearing was deteriorating.
However, in a person with PWS, the 15th chromosome has been given 2 genes from the mother, and none from the father. This is called maternal UPD ( uni-parent disomy) in which 2 copies of the maternal chromosome are inherited with no paternal contribution. Despite the presence of 2 intact chromosomes, there is a functional abnormality in the imprinting that may lead to the absence of gene expression from the paternally donated chromosome, resulting in the PWS phenotype (physical trait) that is common in persons with PWS.
As a child growning up, a lot of you may have had these certain condition. I think these the the normal conditions of a child in general. All children may not experience these certain condition at the same time in life, but I am sure nearly all ch...
The size of the terminal deletion may vary from a subtle 1.4Mb to a classic 30Mb [5]. Earlier genotype-phenotype correlation studies reveal that the main characteristic feature of WHS - the ‘Greek warrior helmet face’, is caused due to the hemizygosity of the WHSC1 gene located in the WHS critical region (WHSCR).[5] Various other genes are also located in the WHSCR which are responsible for most other phenotypic features. More precisely, the Wolf-Hirschhorn syndrome critical region (WHSCR) is located at 4p16.3 region. Approximately 25% of the patients with WHS deletion in this region are not detectable by cytogenetic karyotyping [6]. Hence, FISH has to be performed.
At birth, children with familial dysautonomia are diagnosed by a distinct set of symptoms. (FD Facts) Poor muscle tone and lack of tears are two symptoms that can be detected very early. As they get older they have a hard time maintaining body temperature, they hold their breath for long periods of time and have a delay in speech and walking. The cause of these symptoms is due to a defect IKBKAP gene. Someone with familial dysautonomia has two copies of IKBKAP in each cell, which means a mutation occurred. This mutation disrupts the information in the IKBKAP gene that helps the production of IKAP protein. The IKAP protein is used for brain functions but when the mutation occurs, not enough of the proteins are made for the brain to function properly...
A genetic disorder is a sickness caused by one or many abnormalities or absentees in the genes or chromosomes. One interesting genetic disorder such as cancer, are found genetic but, can also be caused and affected by many by environmental factors such as being exposed to asbestos which may increase the risk of lung cancer and many other cancers. While on the other hand most disorders like Williams Syndrome are genetic and are primarily rare and only affect a limited amount of people about one in every several thousand. Because it is a genetic disorder that is estimated between 1 in 10,000 people worldwide, primarily caused by a micro-deletion on the seventh chromosome is what indicates the disorder being Williams Syndrome.
When the children are diagnosed they have a number of symptoms that point towards progeria. When they are born there is no sign that they have progeria. They look like normal babies. They start having the appearance of someone with progeria as they get into their first or second birthday. They start to loose all of their hair, including the eyebrows, their veins start sticking out like an elderly person's would. They have ears that have no ear lobes and that stick out a lot."A broad, mildly concave nasal ridge nose, prominent eyes, thin lips and micrognathia (small jaw) with a vertical midline groove in the chin."(Baek, McKenna, Eriksson, 2013) Their teeth grow slowly...
The normal human karyotype comprises 22 chromosomes from the mother, and 22 from the father. AS is caused by the loss of the normal maternal contribution to a region of chromosome 15, most commonly by deletion of a segment of that chromosome. However, if the paternal contribution to a region of chromosome 15 took place, it would be called Prader-Willi syndrome, the sister disorder of AS. Both disorders can result from deletion, uni-parental disomy, single gene mutation, and imprinting defects of chromosome 15. These two conditions contain both complex similarities and clinical distinctions. They both feature neurological, developmental, and behavioral phenotypes as well as other structural and functional abnormalities. However, symptoms of AS include seizures and ataxia, while PWS includes obsessive-compulsive symptoms and hypothalamic insufficiency.
The human genome is a remarkable system composed of over 3 billion DNA base pairs that encode for the characteristics that makes people distinctly human and unique themselves. Without the genome’s nearly flawless ability to self-replicate the human species would cease to exist. As incredible as this replication methodology is, it is not without its faults. Genetic mutations, though rare and typically harmless, can strike at any time and in various ways. Still, when they do cause harm the effects can be profound and impossible to ignore. Hutchinson-Gilford Progeria Syndrome (HGPS) is an instance where the mutation of just one nucleotide has devastating results. The Mayo Clinic defines progeria as a progressive genetic disorder that causes children to age rapidly, beginning in their first two years of life. This study defines the disease of progeria by outlining symptoms and identifying causes that lead to its diagnosis. In addition, treatment methods and extensive research that give those affected by the disease hope for a brighter future are highlighted.
Genetic diseases are diseases passed down through heredity and genes. Tourette Syndrome is one of the more common genetic diseases. Although it is made fun of in television and movies, Tourette Syndrome is a very serious disorder.
It was not until my sophomore year at Michigan State University when I found the career path of genetic counseling. I was instantly attracted to studying genetics because the human genome astonished me and enabled me to work with the two things I love – Genetics, and caring for those in need. My main motive in studying genetics is the desire to contribute to the growing medical fields and give my utmost help to our society to overcome genetic diseases. I will graduate with a major in Genomics and Molecular Genetics with a minor in Health Promotion at Michigan State University Lyman Briggs College. This sustained and comprehensive genetics major makes me distinguished among other applicants since my understanding of genetics and genomics is much more in-depth and my dedication to pursuing a genetic counseling career is my end goal.
Girls with this syndrome may have many middle ear infections during childhood; if not treated, these chronic infections could cause hearing loss. Up to the age of about 2 years, growth in height is approximately normal, but then it lags behind that of other girls. Greatly reduced growth in height of a female child should lead to a chromosome test if no diagnosis has already been made. Early diagnosis is very importance in order to be able to give enough correct information to the parents, and gradually to the child herself, so that she has the best possibilities for development. Early diagnosis is also important in case surgical treatment of the congenital heart defect (seen in about 20 per cent of cases) is indicated.
Usher Syndrome (US) is a genetic disorder, caused by a recessive gene, and when both parents do not show any symptoms or express any of the genes characteristics. According to Benson, US is the most common cause of both deafness and blindness being inherited (2015). Currently, there are at least 10 genes able to cause US (Benson, 2015). Modern technology, such as newborn hearing screening, has reduced the age of diagnosed hearing loss from 12-18 moths to 6 months. Unfortunately, children with US are often diagnosed with only a hearing loss, at first, because problems with vision do not appear until much later. This misdiagnosis leaves parents confused because US has never been in their family before, but there is only a 25% their offspring with inherit US, and that is if they both carry the same genetic variation of US. There are also three different types of US and each type faces a different way to manage/treat these issues (Wallber, 2009b).
...omosomes or genetic/chromosomal disorders. The most common type of genetic or chromosomal disorder is Down Syndrome or trisomy 21 (Cherry, n.d.). The condition occurs when a child has three chromosomes at the site of the twenty-first chromosome rather than the normal two. Some of the most common signs of Down Syndrome include round face, thick tongue, slanted eyes, hearing problems, heart defects, and intellectual impairment.