C1272 字2:19新聞報導英國腔發布於 2026年7月10日 · 更新於 2026年7月10日

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A landmark genomic study published in the European Journal of Human Genetics has demonstrated that copy number variant analysis through exome sequencing can substantially enhance diagnostic yield for developmental disorders in African populations.

一項發表於《歐洲人類遺傳學雜誌》的里程碑式基因組研究表明，透過全外顯子組定序進行的拷貝數變異分析，可以顯著提高非洲人群發育障礙的診斷率。

The research, conducted under the Deciphering Developmental Disorders in Africa initiative, employed two well-established bioinformatics tools utilizing distinct algorithmic approaches to identify copy number variants from existing exome sequencing data.

這項在非洲發育障礙解碼計劃倡議下進行的研究，採用了兩種成熟的生物資訊學工具，利用不同的演算法方法，從現有的外顯子組定序數據中識別拷貝數變異。

Researchers emphasized that this methodology could prove particularly transformative in resource-limited healthcare environments across the continent.

研究人員強調，這種方法在整個非洲大陸資源有限的醫療環境中，可能會證明特別具有變革性。

The DDD-Africa study was initiated with the explicit aim of implementing genomic medicine solutions for rare developmental disorders in Africa.

DDD-Africa 研究的啟動，其明確目標是在非洲為罕見發育障礙實施基因組醫學解決方案。

The project focused primarily on cohorts recruited from South Africa and the Democratic Republic of Congo.

該項目主要關注從南非和剛果民主共和國招募的群體。

Ethics approval was obtained from multiple institutions, including the University of the Witwatersrand, the University of Pretoria, and the University of Kinshasa, thereby ensuring rigorous ethical oversight throughout the investigation.

倫理審查批准已從多個機構獲得，包括金山大學、普利托利亞大學和金夏沙大學，從而確保了整個調查過程中的嚴格倫理監督。

The cohort comprised 505 probands diagnosed with developmental disorders who had received no prior genetic diagnosis, along with their parents where available.

該研究隊列包含 505 名被診斷患有發育障礙且先前未接受過基因診斷的先證者，以及他們可以隨同參與的父母。

The average age of participants was 7.2 years, with males constituting sixty-two percent of the sample.

參與者的平均年齡為 7.2 歲，其中男性佔樣本的百分之六十二。

Recruitment yielded 358 participants from South Africa and 147 from the Democratic Republic of Congo, encompassing 239 trios, 235 duos, and 14 singletons.

招募工作在南非產生了 358 名參與者，在剛果民主共和國產生了 147 名，其中包括 239 個三人組（雙親與患者）、235 個雙人組（單親與患者）以及 14 個單人組（僅患者）。

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Were it not for advances in bioinformatics, extracting copy number variant data from exome sequencing would remain prohibitively challenging.

若非生物資訊學的進步，從外顯子組定序中提取拷貝數變異數據將仍然具有極高的挑戰性。

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The study's findings suggest that exome sequencing-based approaches could serve as a viable first-tier genetic diagnostic test for developmental disorders across Africa.

該研究的發現表明，以全外顯子組定序為基礎的方法，可作為整個非洲地區發育障礙的可行第一線基因診斷測試。

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Should these methods gain wider adoption, they would significantly reduce the financial burden associated with separate genomic analyses in regions where healthcare resources are scarce.

倘若這些方法獲得更廣泛的採用，它們將顯著減輕在醫療資源匱乏的地區中，與獨立基因組分析相關的財務負擔。

Copy number variant analysis by exome sequencing is an effective approach to optimize diagnostic...非洲發育障礙研究的基因組學突破

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