Gentamicin, genetic variation and deafness in preterm children

Area of Science:

• Neonatal Medicine
• Genetics
• Audiology

Background:

• Hearing loss is more common in preterm infants.
• Aminoglycoside antibiotics are vital in neonatal intensive care units but can cause hearing loss.
• A specific mitochondrial mutation (m.1555A > G) can cause hearing loss irrespective of drug levels.

Purpose of the Study:

• To determine the prevalence and impact of the m.1555A > G mutation on hearing loss in very preterm infants.
• To investigate the association between this mutation, aminoglycoside use, and acquired hearing loss.

Main Methods:

• A case-control study comparing very preterm infants with and without hearing loss.
• DNA analysis of saliva samples to detect the m.1555A > G mutation.
• Statistical analysis using conditional logistic regression to evaluate risk factors.

Main Results:

• This section is to be filled after the study's completion.

Conclusions:

• Genetic testing for m.1555A > G may be considered during pregnancy or before aminoglycoside administration.
• Alternative antibiotics might be necessary for infants with this mutation.
• Further research will clarify the pathways of hearing loss in preterm infants.