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In order to make sure that this was the true cause of the disease, the researchers used genetically modified animals with this gene altered.

Instead, patients are turning out to have a wide variety, almost a custom set, of gene defects.

Those with the defect can be three times more likely to suffer peanut allergy than people with normal Filaggrin.

The genetic defect was not associated with carotid atherosclerosis (hardening of the arteries in the neck and head), the researchers said.

A male contraceptive pill could be a step closer after US researchers identified a gene flaw linked to male infertility.

Researchers believe the receptor is part of a biochemical pathway involving many genes , defects in any of which may lead to the disease .

We all must have some sort of genetic flaw that makes us do this.

Besides depriving people of potentially useful information, the fear of discrimination can hamper scientific progress.

Except for very rare single gene defects, the inheritance of obesity is complex and still poorly understood, despite active investigations.