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Common cancer susceptibility gene appears to be frequently acquired in metastatic lesions from colorectal cancer

A relatively common cancer susceptibility gene appears to be frequently acquired in metastatic lesions from colorectal cancer, and give cancer cells a growth advantage, according to a study in the October 5 issue of JAMA: The Journal of the American Medical Association.

4 Oct 2005

African-American women with mitochondrial DNA variant are at increased risk of breast cancer

African-American women who carry the 10398A mitochondrial DNA allele are 60 percent more likely to develop invasive breast cancer than African-American females without that genetic marker, according to research published in the September 1 issue of "Cancer Research."

1 Sep 2005

Discovery of gene that controls the speed at which patients develop tuberculosis

Scientists at the Research Institute of the McGill University Health Centre (RI MUHC) have discovered a gene that controls the speed at which patients develop tuberculosis--the first time such a gene has been discovered for this disease.

16 Aug 2005

Variant of a common protein plays a primary role in Type 2 diabetes and obesity

Scientists in France and the United States report that a variant of a common protein plays a primary role in Type 2 diabetes and obesity, key features of the "insulin resistance syndrome" that affects more than 50 million people in this country and a similar number in Europe.

19 Jul 2005

Individuals with inactive heterozygous ALDH2, a tendency to alcohol flushing have a greater susceptibility to hangovers

Alcohol consumption is an integral part of the Japanese business culture. Hangovers, however, can have substantial economic drawbacks.

17 Jul 2005

Two common gene variations are associated with the risk for developing chronic kidney disease

Two common gene variations are associated with the risk for developing chronic kidney disease, according to a study by researchers at the Johns Hopkins Bloomberg School of Public Health and other institutions. One variant increases risk and the other decreases risk with a similar effect in whites, African-Americans, diabetic and non-diabetic individuals.

14 Jun 2005

Diversity of HLA genotypes in humans is shaped to a significant degree by pathogens

The great physical diversity that evolution has forged in human beings is in evidence wherever we look, but the genes exhibiting the greatest diversity at the DNA level happen to function in a wholly invisible process: immunity. Genes encoding the Human Leukocyte Antigen (HLA) proteins are among the most diverse in the human genome, and scientists have proposed a number of hypotheses to explain why.

6 Jun 2005

New dopamine transporter gene findings may be relevant for substance abuse, tobacco smoking, and ADHD

Confirming findings in a previous study, Yale researchers observed an altered availability of the dopamine transporter in healthy persons with a genetic variation linked to substance abuse and attention deficit hyperactivity disorder (ADHD).

6 Jun 2005

New finding in studying dopamine transporter

30 May 2005

ParAllele BioScience announces key patent issuance

ParAllele BioScience has announced the issuance by the U.S. Patent Office of a key patent (6,858,412) covering its Molecular Inversion Probe (MIP) technology. The patent is owned by Stanford University and is exclusively licensed to ParAllele.

21 Mar 2005

Genetic link to kidney damage after heart surgery

Specific variants of genes involved in inflammation and blood vessel constriction are strongly associated with kidney damage in patients undergoing major heart surgery, researchers at Duke University Medical Center have found.

1 Mar 2005

Separating chromosomes improves genetic test results

A new process that helps unmask genetic mutations by separating chromosomes so they can be studied individually may improve the diagnostic yield of some genetic tests, according to findings of a Colon Cancer Family Registry study published today in the Journal of the American Medical Association.

16 Feb 2005

New simple and cost-effective method of diagnosing hereditary genetic disorders

A technique called size-fractionation performed on a sample of the mother's blood allows researchers to identify fetal DNA molecules separate from maternal DNA as a way to determine which pregnancies may be at risk for genetic disorders, according to a preliminary communication in the February 16 issue of JAMA, a theme issue on medical applications of biotechnology.

15 Feb 2005

Variation in a taste receptor gene influences taste sensitivity

Variation in a taste receptor gene influences taste sensitivity of children and adults, accounting for individual differences in taste preferences and food selection, report a team of researchers from the Monell Chemical Senses Center. In addition to genes, age and culture also contribute to taste preferences, at times overriding the influence of genetics.

7 Feb 2005

Direct modulation of progesterone signaling appears to influence ovarian cancer risk

A woman's risk of ovarian cancer rises significantly if she carries either of two previously unexamined variations in the gene that codes for the progesterone receptor, according to a team of researchers led by scientists from the Keck School of Medicine of the University of Southern California.

5 Jan 2005

DLX5 gene may play a role in the pathology of Rett Syndrome

A research team led by Terumi Kohwi-Shigematsu of the Life Sciences Division of Lawrence Berkeley National Laboratory has identified a gene, DLX5, that may play a role in the pathology of Rett Syndrome, a devastating neurological disorder diagnosed almost exclusively in girls.

20 Dec 2004

Rett Syndrome, the first identified epigenetic disease - linked to specific defects in the three-dimensional folding of chromatin

Sometime between the age of 6 and 18 months, after a period of seemingly normal development, girls affected with Rett Syndrome lose interest in play; they gradually become withdrawn and anxious, develop autistic-like behaviors, and acquire specific symptoms like repetitive teeth-grinding and hand-wringing.

20 Dec 2004

Discovery of key immune system molecules that helps determine how effectively a person resists HIV infection

A team of researchers based partly in South Africa has identified a key set of immune system molecules that helps determine how effectively a person resists infection with human immunodeficiency virus (HIV).

8 Dec 2004

Novel mutagenesis screen used to identify genetic suppressors of thrombosis

Researchers using a novel sensitized ENU (N-ethyl-N-nitrosourea, a carcinogen-induced animal tumor model established to grow malignant and benign tumors) mutagenesis (induction of mutation) screen in laboratory mice have developed a promising approach to genetic screening that can increase the likelihood of identifying dominant suppressors of thrombosis.

6 Dec 2004

New advances in sickle cell disease

Excruciating pain episodes, recurrent pneumonias, strokes, severe infections, chronic hemolytic anemia, and secondary pulmonary hypertension are common complications of sickle cell disease, a life-threatening inherited defect in blood that causes normally disc-shaped red blood cells to take on a sickle shape.