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.

UCLA researchers classify kidney cancer into several unique subtypes

Researchers with the Institute of Urologic Oncology and the Department of Urology at UCLA have classified kidney cancer into several unique subtypes, a finding that will help physicians tailor treatment to individual patients and that moves cancer care one step closer to personalized medicine.

17 Apr 2013

Research suggests fainting may be genetic while certain triggers may not be inherited

New research suggests that fainting may be genetic and, in some families, only one gene may be responsible. However, a predisposition to certain triggers, such as emotional distress or the sight of blood, may not be inherited.

16 Apr 2013

High levels of blood cholesterol increase risk of AD and heart disease

Researchers at the Linda Crnic Institute for Down Syndrome and the University of Colorado School of Medicine have found that a single mechanism may underlie the damaging effect of cholesterol on the brain and on blood vessels.

16 Apr 2013

Modulation of cerebral endocannabinoid system may help treat Fragile X chromosome syndrome

Researchers at the University of the Basque Country (UPV/EHU) and the Achucarro neurosciences centre have discovered a new therapy for the fragile X chromosome syndrome. This new therapy proposes the modulation of the cerebral endocannabinoid system in order to ameliorate the symptoms of the disease.

11 Apr 2013

FDA grants Breakthrough Therapy Designation for ibrutinib as monotherapy for CLL patients

Pharmacyclics, Inc. announced today that the U.S. Food and Drug Administration has granted an additional Breakthrough Therapy Designation for the investigational oral agent ibrutinib as monotherapy for the treatment of chronic lymphocytic leukemia or small lymphocytic lymphoma patients with deletion of the short arm of chromosome 17 (deletion 17p).

8 Apr 2013

Gene behind Vel blood group discovered

Researchers have uncovered the gene at the root of a human blood group that has remained a mystery for the past 60 years. They showed that a genetic deletion on this gene is responsible for the lack of this blood group in some people.

8 Apr 2013

Fruit fly study offers clues to wound healing

A person's skin and a fruit fly's exoskeleton, called a "cuticle" may not look alike, but both coverings protect against injury, infection, and dehydration.

6 Apr 2013

Researchers diagnose genetic disease in embryonic DNA without biopsy

Preimplantation genetic diagnosis (PGD) technologies allow identification of genetic disorders in human preimplantation embryos after in vitro fertilization (IVF) and before the embryo is transferred back to the patient.

3 Apr 2013

Researchers focus on understanding mechanistic, physiological aspects of conflicts in living cells

Bacteria appear to speed up their evolution by positioning specific genes along the route of expected traffic jams in DNA encoding. Certain genes are in prime collision paths for the moving molecular machineries that read the DNA code, as University of Washington scientists explain in this week's edition of Nature.

30 Mar 2013

European Commission grants conditional marketing authorization for Pfizer's BOSULIF

Pfizer Inc. announced today that the European Commission has granted conditional marketing authorization for BOSULIF (bosutinib) in the European Union for the treatment of adult patients with chronic phase, accelerated phase and blast phase Philadelphia chromosome positive chronic myelogenous leukemia previously treated with one or more tyrosine kinase inhibitor(s) and for whom imatinib, nilotinib and dasatinib are not considered appropriate treatment options.

28 Mar 2013

Study links genetic variation, wheezing illness to childhood asthma risk

About 90 percent of children with two copies of a common genetic variation and who wheezed when they caught a cold early in life went on to develop asthma by age 6, according to a study to be published March 28 by the New England Journal of Medicine.

28 Mar 2013

Study examines specific form of autism caused by duplication on chromosome 15

Identifying and understanding the combination of factors that leads to autism is an ongoing scientific challenge. This developmental disorder appears in the first three years of life, and affects the brain's normal development of social and communication skills.

27 Mar 2013

Study reveals role of SNX27 protein in brain function

What is it about the extra chromosome inherited in Down syndrome-chromosome 21-that alters brain and body development? Researchers at Sanford-Burnham Medical Research Institute have new evidence that points to a protein called sorting nexin 27, or SNX27.

25 Mar 2013

Researchers complete phase II clinical trial of dasatinib for patients with higher-risk MDS

Researchers at Moffitt Cancer Center have completed a phase II clinical trial to determine the safety and efficacy of dasatinib for patients with higher-risk myelodysplastic syndromes, chronic myelomonocytic leukemia, or acute myeloid leukemia resulting from MDS and have failed treatment with azanucleosides.

21 Mar 2013

Study explores new mechanism that may contribute to development of cancers

A study published today in the journal Nature Genetics explores a new mechanism that may contribute to the development of several tumours, including Chronic Lymphocytic Leukaemia, a type of cancer that affects more than a thousand new patients in Spain each year.

20 Mar 2013

CHOP expert to receive Pediatric Oncology Award from ASCO

The American Society of Clinical Oncology today announced it will confer one of its highest awards on pediatric oncologist Garrett M. Brodeur, M.D., of the Cancer Center at The Children's Hospital of Philadelphia.

16 Mar 2013

Mini-chromosome maintenance protein can change DNA topology: Study

A team of USC scientists has identified a protein that can change DNA topology, making DNA twist up into a so-called "supercoil."

12 Mar 2013

Insight into how protein synthesis and degradation help regulate delicate ballet of cell division

Biochemists at the University of Massachusetts Amherst including assistant professor Peter Chien recently gained new insight into how protein synthesis and degradation help to regulate the delicate ballet of cell division. In particular, they reveal how two proteins shelter each other in "mutually assured cleanup" to insure that division goes smoothly and safely.

5 Mar 2013

Structural connectome maps reveal new details about agenesis of the corpus callosum

Combining hospital MRIs with the mathematical tool known as network analysis, a group of researchers at UC San Francisco and UC Berkeley have mapped the three-dimensional global connections within the brains of seven adults who have genetic malformations that leave them without the corpus callosum, which connects the left and right sides of the brain.

1 Mar 2013

Gene mutation findings classify renal cell carcinoma

Researchers have identified mutation-defined subtypes of clear cell renal cell carcinoma that have distinct clinical outcomes.

20 Feb 2013