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Diagnostic and perinatal outcomes in consanguineous couples with a structural fetal anomaly: A cohort study.

具有结构性胎儿异常的近亲夫妇的诊断和围产结局: 一项队列研究。

  • 影响因子:2.21
  • DOI:10.1111/aogs.14036
  • 作者列表:"Mone F","Doyle S","Ahmad A","Abu Subieh H","Hamilton S","Allen S","Marton T","Williams D","Kilby MD
  • 发表时间:2021-03-01
Abstract

INTRODUCTION:Consanguineous unions occur when a couple are related outside marriage and is associated with adverse genetic and perinatal outcomes for affected offspring. The objectives of this study were to evaluate: (i) background characteristics, (ii) uptake of prenatal and postnatal investigation and (iii) diagnostic outcomes of UK consanguineous couples presenting with a fetal structural anomaly. MATERIAL AND METHODS:This was a retrospective and partly prospective cohort study comparing consanguineous (n = 62) and non-consanguineous (n = 218) pregnancies with current or previous fetal structural anomalies reviewed in a UK prenatal genetic clinic from 2008 to 2019. Outcomes were compared using odds ratios (OR). RESULTS:Most consanguineous couples were of Pakistani ethnicity (odds ratio [OR] 29, 95% confidence interval [95% CI] 13-62) and required use of an interpreter [OR 9, 95% CI 4-20). In the consanguineous group, the uptake of prenatal invasive testing was lower (OR 0.4, 95% CI 0.2-0.7) and the number declining follow up was greater (OR 10, 95% CI 3-34) than in the non-consanguineous group. This likely explained the lower proportion of consanguineous couples where a final definitive unifying diagnosis to explain the fetal structural anomalies was reached (OR 0.3, 95% CI 0.2-0.6). When a diagnosis was obtained in this group, it was always postnatal and most often using genomic sequencing technologies (OR 6, 95% CI 1-27). The risk of perinatal death was greater (OR 3, 95% CI 1-6) in the consanguineous group, as was the risk of fetal structural anomaly recurrence in a subsequent pregnancy (OR 4, 95% CI 1-13). There was no difference in the uptake of perinatal autopsy or termination of pregnancy between groups. CONCLUSIONS:Consanguineous couples are a vulnerable group in the prenatal setting. Although adverse perinatal outcomes in this group are more common secondary to congenital anomalies, despite the evolution of genomic sequencing technologies, due to a lower uptake of prenatal testing it is less likely that a unifying diagnosis is obtained and recurrence can occur. There is a need for proactive genetic counseling and education from the multidisciplinary team, addressing language barriers as well as religious and cultural beliefs in an attempt to optimize reproductive options.

摘要

引言: 近亲结合发生在夫妻婚外相关,并与受影响后代的不良遗传和围产期结局相关。本研究的目的是评估 :( i) 背景特征,(ii) 产前和产后调查的吸收以及 (iii) 英国近亲夫妇出现胎儿结构异常的诊断结果。 材料和方法: 这是一项回顾性和部分前瞻性队列研究,比较了2008年至2019年在英国产前遗传诊所审查的具有当前或既往胎儿结构异常的近亲 (n = 62) 和非近亲 (n = 218) 妊娠。使用比值比 (OR) 比较结局。 结果: 大多数近亲夫妇是巴基斯坦种族 (比值比 [OR] 29,95% 置信区间 [95% CI] 13-62),需要使用翻译 [OR 9,95% CI 4-20)。在近亲组中,与非近亲组相比,产前侵入性检测的摄取较低 (OR 0.4,95% CI 0.2-0.7),随访次数减少较多 (OR 10,95% CI 3-34)。这可能解释了近亲夫妇达到最终明确统一诊断以解释胎儿结构异常的比例较低 (OR 0.3,95% CI 0.2-0.6)。当在该组中获得诊断时,总是在出生后并且最常使用基因组测序技术 (OR 95% CI 1-27)。近亲组的围产儿死亡风险较高 (OR 3,95% CI 1-6),随后妊娠中胎儿结构异常复发的风险也较高 (OR 4,95% CI 1-13)。组间围产期尸检或终止妊娠的摄取无差异。 结论: 近亲夫妇是产前的弱势群体。尽管该组中的不良围产期结局更常见继发于先天性异常,尽管基因组测序技术的发展,但由于产前检测的接受程度较低,获得统一诊断和复发的可能性较小。需要多学科团队进行积极的遗传咨询和教育,解决语言障碍以及宗教和文化信仰,以优化生殖选择。

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