Exome sequencing identifies GATA-2 mutation as the cause of dendritic cell, monocyte, B and NK lymphoid deficiency.

Exome sequencing identifies GATA-2 mutation as the cause of dendritic cell, monocyte, B and NK lymphoid deficiency.
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DOI:
10.1182/blood-2011-06-360313
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发表时间:
2011-09-08
期刊:
影响因子:
20.3
通讯作者:
Collin M
Collin M
中科院分区:
医学1区
文献类型:
--
作者:
Dickinson RE;Griffin H;Bigley V;Reynard LN;Hussain R;Haniffa M;Lakey JH;Rahman T;Wang XN;McGovern N;Pagan S;Cookson S;McDonald D;Chua I;Wallis J;Cant A;Wright M;Keavney B;Chinnery PF;Loughlin J;Hambleton S;Santibanez-Koref M;Collin M

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树突状细胞、单核细胞、B和自然杀伤淋巴细胞缺乏的人类综合征表现为散发性或常染色体显性特征,引起对分枝杆菌和其他感染的易感性,对骨髓增生异常和白血病的易感性,以及在某些情况下,肺泡蛋白沉积症。为了寻找遗传原因,我们对4名无关人员(其中3名患有散发性疾病)的外显子组进行了测序,寻找新的、杂合的和可能有害的变体。许多基因在人身上都有新的变异,但只有一个基因GATA 2在所有4个人身上都发生了突变。每个人都携带不同的突变,但预计所有突变都是高度有害的,并会导致C末端锌指结构域的丢失或突变。由于GATA 2是4个无关个体中唯一常见的突变基因,因此极有可能是树突状细胞、单核细胞、B和自然杀伤淋巴缺陷的原因。因此,这种疾病构成了遗传性免疫缺陷和白血病转化的一种新的遗传形式。
The human syndrome of dendritic cell, monocyte, B and natural killer lymphoid deficiency presents as a sporadic or autosomal dominant trait causing susceptibility to mycobacterial and other infections, predisposition to myelodysplasia and leukemia, and, in some cases, pulmonary alveolar proteinosis. Seeking a genetic cause, we sequenced the exomes of 4 unrelated persons, 3 with sporadic disease, looking for novel, heterozygous, and probably deleterious variants. A number of genes harbored novel variants in person, but only one gene, GATA2, was mutated in all 4 persons. Each person harbored a different mutation, but all were predicted to be highly deleterious and to cause loss or mutation of the C-terminal zinc finger domain. Because GATA2 is the only common mutated gene in 4 unrelated persons, it is highly probable to be the cause of dendritic cell, monocyte, B, and natural killer lymphoid deficiency. This disorder therefore constitutes a new genetic form of heritable immunodeficiency and leukemic transformation.
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