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Topic Review
MYH9-Related Disorder
MYH9-related disorder is a condition that can have many signs and symptoms, including bleeding problems, hearing loss, kidney (renal) disease, and clouding of the lens of the eyes (cataracts).
  • 1.1K
  • 23 Dec 2020
Topic Review
Cohen Syndrome
Cohen syndrome is an inherited disorder that affects many parts of the body and is characterized by developmental delay, intellectual disability, small head size (microcephaly), and weak muscle tone (hypotonia). Other features common in this condition include worsening nearsightedness (myopia), breakdown (degeneration) of the light-sensitive tissue at the back of the eye (retinal dystrophy), an unusually large range of joint movement (hypermobility), and distinctive facial features. These facial features typically include thick hair and eyebrows, long eyelashes, unusually-shaped eyes (down-slanting and wave-shaped), a bulbous nasal tip, a smooth or shortened area between the nose and the upper lip (philtrum), and prominent upper central teeth. The combination of the last two facial features results in an open mouth.
  • 1.1K
  • 24 Dec 2020
Topic Review
Hereditary Hemorrhagic Telangiectasia
Hereditary hemorrhagic telangiectasia is a disorder that results in the development of multiple abnormalities in the blood vessels.
  • 1.1K
  • 31 Dec 2020
Topic Review
Björnstad Syndrome
Björnstad syndrome is a rare disorder characterized by abnormal hair and hearing problems. Affected individuals have a condition known as pili torti, which means "twisted hair," so named because the strands appear twisted when viewed under a microscope. The hair is brittle and breaks easily, leading to short hair that grows slowly. In Björnstad syndrome, pili torti usually affects only the hair on the head; eyebrows, eyelashes, and hair on other parts of the body are normal. The proportion of hairs affected and the severity of brittleness and breakage can vary. This hair abnormality commonly begins before the age of 2. It may become milder with age, particularly after puberty.
  • 1.1K
  • 24 Dec 2020
Topic Review
THAP1 Gene
THAP domain containing 1: The THAP1 gene provides instructions for making a protein that is a transcription factor, which means that it attaches (binds) to specific regions of DNA and regulates the activity of other genes.
  • 1.1K
  • 25 Dec 2020
Topic Review
Clock Genes
Inflammation is a common feature of several diseases, including obesity, diabetes and neurodegenerative disorders. Circadian clock genes are expressed and oscillate in many cell types such as macrophages, neurons and pancreatic β cells. During inflammation, these endogenous clocks control the temporal gating of cytokine production, the antioxidant response, chemokine attraction and insulin secretion, among other processes. Deletion of clock genes in macrophages or brain-resident cells induces a higher production of inflammatory cytokines and chemokines, and this is often accompanied by an increased oxidative stress. In the context of obesity and diabetes, a high-fat diet disrupts the function of clock genes in macrophages and in pancreatic β cells, contributing to inflammation and systemic insulin resistance. 
  • 1.1K
  • 07 Jan 2021
Topic Review
DNA Assembly
Assembly of DNA-grafted 3D superlattice is composed of two pivotal elements: nanoparticles (NPs) core and DNA shell. The progress of chemical synthesis technique enables the chemical composition of NP core unrestricted; it can be metals, oxides, polymers, even biological molecule, which also allow for the integration of multiple functions like luminescent, catalytic, magnetic properties, and so on.
  • 1.1K
  • 28 Jul 2021
Topic Review
Smith-Lemli-Opitz Syndrome
Smith-Lemli-Opitz syndrome is a developmental disorder that affects many parts of the body.
  • 1.1K
  • 25 Dec 2020
Topic Review
Otopalatodigital Syndrome Type 1
Otopalatodigital syndrome type 1 is a disorder primarily involving abnormalities in skeletal development.
  • 1.1K
  • 24 Dec 2020
Topic Review
Low-energy electron Damage to DNA
The complex physical and chemical reactions between the large number of low-energy (0-30 eV) electrons (LEEs) released by high energy radiation interacting with genetic material can lead to the formation of various DNA lesions such as single strand breaks (SSBs), crosslinks (CLs), base modifications, double strand breaks (DSBs) and other clustered lesions.
  • 1.1K
  • 29 Jul 2021
Topic Review
C3 Gene
complement C3
  • 1.1K
  • 24 Dec 2020
Topic Review
Robinow Syndrome
Robinow syndrome is a rare disorder that affects the development of many parts of the body, particularly the skeleton.
  • 1.1K
  • 24 Dec 2020
Topic Review
PRKN Gene
parkin RBR E3 ubiquitin protein ligase
  • 1.1K
  • 22 Dec 2020
Topic Review
DNA Damage and Multiple Myeloma
Multiple myeloma (MM) is an incurable plasma cell malignancy characterized by genomic instability. MM cells present various forms of genetic instability, including chromosomal instability, microsatellite instability, and base-pair alterations, as well as changes in chromosome number. The tumor microenvironment and an abnormal DNA repair function affect genetic instability in this disease. In addition, states of the tumor microenvironment itself, such as inflammation and hypoxia, influence the DNA damage response, which includes DNA repair mechanisms, cell cycle checkpoints, and apoptotic pathways. Unrepaired DNA damage in tumor cells has been shown to exacerbate genomic instability and aberrant features that enable MM progression and drug resistance.
  • 1.1K
  • 18 Feb 2021
Topic Review
Allan-Herndon-Dudley Syndrome
Allan-Herndon-Dudley syndrome is a rare disorder of brain development that causes moderate to severe intellectual disability and problems with movement. This condition, which occurs exclusively in males, disrupts development from before birth. Although affected males have impaired speech and a limited ability to communicate, they seem to enjoy interaction with other people.
  • 1.1K
  • 24 Dec 2020
Topic Review
Familial Mediterranean Fever
Familial Mediterranean fever is an inherited condition characterized by recurrent episodes of painful inflammation in the abdomen, chest, or joints. These episodes are often accompanied by fever and sometimes a rash or headache. Occasionally inflammation may occur in other parts of the body, such as the heart; the membrane surrounding the brain and spinal cord; and in males, the testicles. In about half of affected individuals, attacks are preceded by mild signs and symptoms known as a prodrome. Prodromal symptoms include mildly uncomfortable sensations in the area that will later become inflamed, or more general feelings of discomfort.
  • 1.1K
  • 25 Dec 2020
Topic Review
Familial Erythrocytosis
Familial erythrocytosis is an inherited condition characterized by an increased number of red blood cells (erythrocytes).
  • 1.1K
  • 25 Dec 2020
Topic Review
PLG Gene
plasminogen
  • 1.1K
  • 25 Dec 2020
Topic Review
DHMN-V
Distal hereditary motor neuropathy, type V is a progressive disorder that affects nerve cells in the spinal cord. It results in muscle weakness and affects movement of the hands and feet.
  • 1.1K
  • 04 Jan 2021
Topic Review
New Genetic Screening Technologies (NIPT)
The search for prenatal detection of chromosomal anomalies has been ongoing since the 1960s. At the very beginning, maternal age was the screening parameter of choice, and Down syndrome the anomaly that was almost exclusively screened for. Since then things have, at least technically, changed enormously, even though Down syndrome is still the main focus of screening and in the minds of many patients the only diagnosis that they may confront. Structural chromosomal anomalies and monogenic diseases are still not focused on by current screening algorithms, nor by the education system or by society in general. With the clinical implementation of non-invasive prenatal testing (NIPT) in 2012, there has been a paradigm shift in prenatal screening. First trimester combined screening (FTCS) based on maternal age, fetal nuchal translucency thickness (NT) and the serum markers β-HCG and PAPP-A has a detection rate (DR) of 90–95%, a false positive rate of 2.5–5% and a PPV of 3.4 for the detection of trisomy 21. Included is the advantage that, if the results are abnormal, it could raise suspicion not only for the common trisomies, but also for early detectable fetal structural defects and other clinically relevant findings such as rare autosomal trisomies (RATs), triploidy, single gene disorders and copy number variants not detectable in a targeted NIPT approach. A disadvantage is the comparatively high false positive rate leading to invasive procedures.
  • 1.1K
  • 26 Apr 2021
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