Novel mutations of STXBP2 and LYST associated with adult haemophagocytic lymphohistiocytosis with Epstein-Barr virus infection: a case report.

Abstract:

BACKGROUND:Haemophagocytic lymphohistiocytosis is a life-threatening disease resulting from primary or secondary hyper-inflammatory disorders. The typical symptoms include persistent fever, splenomegaly, cytopenia and significant elevation of serum ferritin. CASE PRESENTATION:We report a 30-year-old Chinese female patient who was diagnosed with chronic active Epstein-Barr virus infection more than 9 months prior and has since been presenting with cutaneous lymphoproliferative disorders mimicking hydroa vacciniforme and subsequent haemophagocytic lymphohistiocytosis. Exome sequencing suggested novel digenic heterozygous STXBP2 (c.592A > C, p.Thr198Pro) and LYST (c.830A > T, p.His277Leu) mutations. CONCLUSIONS:This is the first case report in which adult HLH was associated with novel digenic mutations of STXBP2 and LYST combined with Epstein-Barr virus infection. It could also be the first polygenic model report, given that the pathogenicity of other mutated genes still remains unclear. We additionally conducted an in-depth, two-generation pedigree analysis to further illustrate the mode of inheritance in this case.

journal_name

BMC Med Genet

journal_title

BMC medical genetics

authors

Sheng L,Zhang W,Gu J,Shen K,Luo H,Yang Y

doi

10.1186/s12881-019-0765-3

subject

Has Abstract

pub_date

2019-02-19 00:00:00

pages

34

issue

1

issn

1471-2350

pii

10.1186/s12881-019-0765-3

journal_volume

20

pub_type

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