Chromosome 4 News and Research

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Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 4, one copy inherited from each parent, form one of the pairs. Chromosome 4 spans more than 191 million DNA building blocks (base pairs) and represents more than 6 percent of the total DNA in cells.

Identifying genes on each chromosome is an active area of genetic research. Because researchers use different approaches to predict the number of genes on each chromosome, the estimated number of genes varies. Chromosome 4 likely contains between 1,300 and 1,600 genes.

Genes on chromosome 4 are among the estimated 20,000 to 25,000 total genes in the human genome.

ARIAD Pharmaceuticals completes rolling submission of ponatinib NDA with FDA

ARIAD Pharmaceuticals, Inc. today announced it has completed the rolling submission of the New Drug Application (NDA) for its investigational BCR-ABL inhibitor, ponatinib, to the U.S. Food and Drug Administration (FDA).

28 Sep 2012

Hundreds of new genes are involved in function and development of T-cells

A research team led by investigators at New York University and NYU School of Medicine has determined how cells that cause inflammatory ailments, such as Crohn's disease, multiple sclerosis, and arthritis, differentiate from stem cells and ultimately affect the clinical outcome of these diseases.

27 Sep 2012

Parts of the brain can evolve independently from each other

An Evolutionary Biologist at The University of Manchester, working with scientists in the United States, has found compelling evidence that parts of the brain can evolve independently from each other. It's hoped the findings will significantly advance our understanding of the brain.

From The University of Manchester 26 Sep 2012

Increasing marijuana-like chemicals in the brain can help correct behavioral issues related to fragile X

American and European scientists have found that increasing natural marijuana-like chemicals in the brain can help correct behavioral issues related to fragile X syndrome, the most common known genetic cause of autism.

26 Sep 2012

Study documents women's experiences after abnormal prenatal chromosomal microarray testing

We often hear that "knowledge is power." But, that isn't always the case, especially when the knowledge pertains to the health of an unborn child, with murky implications, at best. A new study, led by researchers from the Perelman School of Medicine at the University of Pennsylvania, begins to document this exception to the general rule.

24 Sep 2012

Natural killer cells may influence lung cancer susceptibility

Why do many heavy smokers evade lung cancer while others who have never lit up die of the disease? The question has vexed scientists for decades.

24 Sep 2012

Disorganized eggs hinder fertility in obese women

Severely obese women are at an increased risk for producing eggs that have multiple spindles and disorganized chromosomes, possibly explaining the reduced fertility in this population, report researchers.

13 Sep 2012

Researchers identify genetic variations linked with onset of Barrett's oesophagus

Genetic variations that are linked with the onset of Barrett's oesophagus (BE), a pre-cancerous condition of the lower end of the gullet, have been identified for the first time. The discovery of variations in regions on two chromosomes makes it possible to develop screening tests for people at high risk of developing the disease.

10 Sep 2012

Researchers identify three genetic regions associated with primary biliary cirrhosis

Researchers have newly identified three genetic regions associated with primary biliary cirrhosis (PBC), the most common autoimmune liver disease, increasing the number of known regions associated with the disorder to 25.

10 Sep 2012

Clathrin protein plays a key role in cell division

A protein called "clathrin," which is found in every human cell and plays a critical role in transporting materials within them, also plays a key role in cell division, according to new research at the University of California, San Francisco.

7 Sep 2012

Pfizer receives FDA approval for BOSULIF to treat Ph+ chronic myelogenous leukemia

Pfizer Inc. announced today the U.S. Food and Drug Administration (FDA) has approved BOSULIF (bosutinib), an Abl and Src kinase inhibitor, for the treatment of adult patients with chronic, accelerated, or blast phase Philadelphia chromosome-positive (Ph+) chronic myelogenous leukemia (CML) with resistance, or intolerance to prior therapy.

6 Sep 2012

Study sheds new light on why most bone marrow transplant patients suffer acute GVHD

A team of scientists led by a bone marrow transplant researcher at Fred Hutchinson Cancer Research Center has shed new light on why most bone marrow transplant patients who receive tissue-matched cells from unrelated donors still suffer acute graft-versus-host disease (GVHD).

6 Sep 2012

Researchers discover two gene variants that raise risk of pediatric cancer neuroblastoma

Researchers have discovered two gene variants that raise the risk of the pediatric cancer neuroblastoma. Using automated technology to perform genome-wide association studies on DNA from thousands of subjects, the study broadens understanding of how gene changes may make a child susceptible to this early childhood cancer, as well as causing a tumor to progress.

5 Sep 2012

FDA approves Bosulif to treat chronic myelogenous leukemia

The U.S. Food and Drug Administration today approved Bosulif (bosutinib) to treat chronic myelogenous leukemia (CML), a blood and bone marrow disease that usually affects older adults.

5 Sep 2012

Concentration increase of HUWE1 protein leads to intellectual disability

2 to 3 % of the children are born with an intellectual disability. Possibly by a genetic defect, but in 80% of these cases, we do not know - yet - which genes are responsible. VIB researchers at KU Leuven show that increased production of the HUWE1 protein is the cause in some patients.

31 Aug 2012

Researchers identify several genetic factors linked to C-reactive protein

African Americans have higher blood levels of a protein associated with increased heart-disease risk than European Americans, despite higher "good" HDL cholesterol and lower "bad" triglyceride levels. This contradictory observation now may be explained, in part, by a genetic variant identified in the first large-scale, genome-wide association study of this protein involving 12,000 African American and Hispanic American women.

31 Aug 2012

Scientists establish genetic mouse model for primary ovarian insufficiency

Scientists have established a genetic mouse model for primary ovarian insufficiency (POI), a human condition in which women experience irregular menstrual cycles and reduced fertility, and early exposure to estrogen deficiency.

31 Aug 2012

Quest Diagnostics announces availability of TERC test for cervical cancer

Quest Diagnostics, the world's leading provider of diagnostic testing, information and services, today announced the availability of a new laboratory test that identifies molecular changes to cervical cells that increase the likelihood a woman may develop cervical cancer.

From Quest Diagnostics 31 Aug 2012

Oral lesion progression markers validated, discovered

Loss of heterozygosity can reliably differentiate between individuals with premalignant oral lesions who are likely to progress to oral carcinoma, and those who are not, show study results.

30 Aug 2012

FISH assay identifies only few lung cancer patients who could benefit from crizotinib

Break apart a couple worm-like chromosomes and they may reconnect with mismatched tips and tails - such is the case of the EML4-ALK fusion gene that creates 2-7 percent of lung cancers. Almost exactly a year ago, the FDA approved the drug crizotinib to treat these ALK+ lung cancer patients, who were likely never smokers. Informed doctors use the test called a FISH assay to check for the EML4-ALK fusion gene, and then if the test is positive, ALK+ patients benefit greatly from crizotinib.

29 Aug 2012

Chromosome 4 News and Research

Further Reading

ARIAD Pharmaceuticals completes rolling submission of ponatinib NDA with FDA

Hundreds of new genes are involved in function and development of T-cells

Parts of the brain can evolve independently from each other

Increasing marijuana-like chemicals in the brain can help correct behavioral issues related to fragile X

Study documents women's experiences after abnormal prenatal chromosomal microarray testing

Natural killer cells may influence lung cancer susceptibility

Disorganized eggs hinder fertility in obese women

Researchers identify genetic variations linked with onset of Barrett's oesophagus

Researchers identify three genetic regions associated with primary biliary cirrhosis

Clathrin protein plays a key role in cell division

Pfizer receives FDA approval for BOSULIF to treat Ph+ chronic myelogenous leukemia

Study sheds new light on why most bone marrow transplant patients suffer acute GVHD

Researchers discover two gene variants that raise risk of pediatric cancer neuroblastoma

FDA approves Bosulif to treat chronic myelogenous leukemia

Concentration increase of HUWE1 protein leads to intellectual disability

Researchers identify several genetic factors linked to C-reactive protein

Scientists establish genetic mouse model for primary ovarian insufficiency

Quest Diagnostics announces availability of TERC test for cervical cancer

Oral lesion progression markers validated, discovered

FISH assay identifies only few lung cancer patients who could benefit from crizotinib

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