Medicine, Wythenshawe Hospital Education and Research Centre, Manchester, UK
Paediatrics, Macclesfield District General Hospital, Macclesfield, Cheshire East, UK.
J Med Ethics. 2021 Feb;47(2):114-116. doi: 10.1136/medethics-2020-106807. Epub 2020 Nov 18.
In this response article, we challenge a core assumption that lies at the centre of a round table discussion regarding the Pharmacogenetics to Avoid Loss of Hearing trial. The round table regards a genetic test for a variant (mt.1555A>G) that increases the risk of deafness if a carrier is given the antibiotic gentamicin. The idea is that rapid testing can identify neonates at risk, providing an opportunity to prevent giving an antibiotic that might cause deafness. We challenge the assumption that a positive test unequivocally guides antibiotic choice because, aside from the risk of deafness, all antibiotics for neonatal sepsis are equivalent. We argue that this assumption is faulty and has particularly troubling moral consequences. We claim that giving an alternative to gentamicin is potentially providing inferior treatment and thereby may increase the risk of death. Parents and doctors are faced with a terrible choice as a result of positive point-of-care testing (POCT): give gold-standard treatment and risk deafness or give second line care and risk death. While we do not indicate an answer to this choice, what we do argue is that such a deep and difficult choice is one that may make parents wish genetic testing was never undertaken, and therefore, contra some authors in the round table, provides a reason to gain specific consent for POCT.
在这篇回应文章中,我们对一个核心假设提出质疑,该假设是关于“避免听力丧失的药物遗传学试验”圆桌讨论的核心。圆桌讨论涉及一种针对变体(mt.1555A>G)的基因检测,如果携带者使用氨基糖苷类抗生素庆大霉素,这种变体就会增加耳聋的风险。该想法是快速检测可以识别出有风险的新生儿,从而有机会避免使用可能导致耳聋的抗生素。我们质疑这样一种假设,即阳性测试可以明确指导抗生素的选择,因为除了耳聋的风险之外,所有用于新生儿败血症的抗生素都是等效的。我们认为,这种假设是错误的,并且具有特别令人困扰的道德后果。我们主张,给予庆大霉素以外的替代药物可能会提供较差的治疗效果,从而可能增加死亡的风险。由于即时检测(POCT)呈阳性,父母和医生面临着一个可怕的选择:给予标准治疗并冒着耳聋的风险,还是给予二线治疗并冒着死亡的风险。尽管我们没有对这个选择提出明确的答案,但我们确实认为,这样一个深刻而困难的选择可能会使父母希望从未进行过基因检测,因此,与圆桌会议中的一些作者相反,这为 POCT 获得特定同意提供了一个理由。