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Glossary

Carrier

A person who carries a mutation in only one copy of a gene, but where a mutation in both copies of that gene is required to cause a genetic condition. The carrier is therefore usually unaffected by the genetic condition, but can transmit the mutated gene to their children, who will be affected if they have mutations in both copies of the gene.



Articles using this Glossary Item

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Women selected for mitochondrial donation in UK

05 February 2018 - by Sam Sherratt

The Human Fertilisation and Embryology Authority (HFEA) has granted permission for doctors to create the UK's first 'three-person' children by mitochondrial donation.

BRCA gene does not affect survival in those treated for breast cancer

15 January 2018 - by Hannah Somers

A new study has found that BRCA gene mutations do not affect the survival rates of breast cancer patients under 40... [Read More]

Multiple births down, says state of UK fertility sector report

18 December 2017 - by Ewa Zotow

The first ever report on the state of the fertility sector has been released by the Human Fertilisation and Embryology Authority (HFEA). It highlights marked improvements in several aspects of performance, including the reduction in multiple births rates, and addresses shortcomings in the sector... [Read More]

Mutation that stops people feeling pain found in Italian family

18 December 2017 - by Dr Rachel Huddart

A newly identified genetic mutation causes members of an Italian family to be unable to feel pain and could lead to the development of new painkillers, research suggests... [Read More]

Gene that protects against Alzheimer's disease found

04 December 2017 - by Ewa Zotow

Researchers have discovered a gene which may reduce the risk of developing Alzheimer's disease... [Read More]

Two couples sue fertility clinic for providing eggs with genetic abnormalities

20 November 2017 - by Nina Chohan

The New York fertility clinic Reproductive Medicine Associates is facing two lawsuits from couples whose children, conceived using donor eggs from the centre, have Fragile X syndrome... [Read More]

FDA to streamline path for direct-to-consumer genetic testing

13 November 2017 - by Jamie Rickman

The US Food and Drugs Administration has further deregulated direct-to-consumer genetic health risk tests, meaning that some will be approved for market without a pre-market review... [Read More]

Offer all prospective parents genetic screening, says study

06 November 2017 - by Ruth Retassie

Genetic testing for cystic fibrosis, fragile X syndrome and spinal muscular atrophy is recommended for all would-be parents by a study in Australia... [Read More]

Seventy-two new gene targets for breast cancer found

30 October 2017 - by Annabel Slater

Two studies have discovered 72 new genetic variants associated with the risk of developing breast cancer... [Read More]

Gene test could improve prediction of breast cancer risk

16 October 2017 - by Hannah Somers

A new genetic test to accurately predict an individual's risk of developing breast cancer will soon be rolled out at two hospital clinics in Manchester... [Read More]

Genome editing targets beta-thalassemia in human embryos

02 October 2017 - by Dr Rachel Brown

A genome editing technique called 'base editing' has been used to correct the mutation causing the inherited blood disorder beta-thalassemia in human embryos... [Read More]

Doubt over human embryo editing study

04 September 2017 - by Annabel Slater

A group of scientists have challenged the landmark study which reported the first successful editing of human embryos for a genetic disease... [Read More]

Disease-causing mutation edited out of human embryos

07 August 2017 - by Charlotte Spicer

Scientists have published their study confirming they are the first to correct a disease-causing mutation in human embryos using genome editing... [Read More]

Book Review: The Gene Machine - How Genetic Technologies Are Changing the Way We Have Kids

24 July 2017 - by Cathal Farrell

'The Gene Machine' is award-winning author Bonnie Rochman's book on pre-and post-natal genetic testing. In it she navigates through classical bioethical issues... [Read More]

Large study finds first genes linked to Tourette's syndrome

26 June 2017 - by Cara Foley

The first genes linked Tourette's syndrome have been identified in the biggest study of the disorder to date... [Read More]

Lifetime cancer risk predicted for BRCA mutation carriers

26 June 2017 - by Lea Goetz

A study of almost 10,000 women carrying BRCA mutations has revealed the best estimate yet of their risk in developing breast and ovarian cancer... [Read More]

Preeclampsia risk linked to DNA of baby, not mother

26 June 2017 - by Dr Linda Wijlaars

Preeclampsia – a dangerous rise in blood pressure in pregnant women – has been linked to a genetic variant found in the baby, instead of the mother... [Read More]

Controversial doctor to use MRT technique for over 40s fertility

19 June 2017 - by Shaoni Bhattacharya

The fertility doctor who led the team which produced the world's first baby through mitochondrial replacement therapy is now looking to use the same technique in a commercial venture... [Read More]

Promise of blood test to predict course of Huntington's disease

12 June 2017 - by Lea Goetz

Scientists have identified the first promising biomarker for Huntington's disease (HD) that could be harnessed in a simple blood test to predict disease onset and progression... [Read More]

Ancestry owns genetic information of customers and their relatives

22 May 2017 - by Jennifer Willows

Customers of Ancestry's consumer DNA tests may be unaware of what they have signed away, a US lawyer has suggested... [Read More]

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