NICE recommends genetic test to prevent newborn babies going deaf
A genetic test to establish if a newborn baby is vulnerable to deafness if treated with a commonly used antibiotic has been recommended by NICE in final guidance.
If babies develop a neonatal bacterial infection doctors and midwives would usually give the antibiotic gentamicin.
However, the use of gentamicin carries the risk of hearing loss if the baby has the m.1555A>G genetic variant. Other alternative antibiotics are available but cannot be more widely used because they are associated with an increased risk of antimicrobial resistance.
At present laboratory testing would not produce results quickly enough to give treatment within an hour – in line with guideline recommendations.
An independent NICE committee has conditionally recommended the use of the genedrive kit, a diagnostic test for detecting the m.1555A>G variant in newborn babies being cared for in hospital.
The test works with a swab of DNA from inside the newborn’s cheek and run it through the genedrive device to discover if the baby has the genetic variant. The results are displayed on screen in under an hour.
If the m.1555A>G variant is found, the baby can be treated with alternative, equally effective, antibiotics.
Around 1,249 babies are born in England and Wales with the m.1555A>G variant each year. At the moment babies treated with gentamicin who go deaf are only discovered to have the genetic variant with DNA testing afterwards.
The estimated cost of treating hearing loss with a bilateral cochlear implant is around £65,000 in the first year.
Evidence presented to the independent NICE committee from the PALOH study carried out in Manchester and Liverpool showed no statistically significant difference between the time to antibiotic treatment between standard care and when using the genedrive device. This suggests that introducing the test will not delay the time it takes to administer antibiotics.
The assessment of the genedrive kit has been carried out through NICE’s Early Value Assessment pilot project which has been created to enable earlier access to digital products, medical devices and diagnostics that address national unmet needs in health and social care.
It will provide quicker assessments of early value to identify the most promising technologies that can be safely used in the NHS. It means clinicians and patients can benefit from medical technologies while further data is collected to inform a full NICE assessment of the device’s cost and clinical effectiveness.
Once in use, the NHS will collect further evidence to ensure the test can be put in place in a variety of different maternity settings and it does not lead to an increased use of antibiotics associated with an increased risk of antimicrobial resistance or an increased time to antibiotic treatment. This additional real world evidence will also be scrutinised by the independent NICE committee as part of the kit’s full assessment.
You can read the full guidance on Genedrive MT-RNR1 ID Kit for detecting a genetic variant to guide antibiotic use and prevent hearing loss in babies on the NICE website.