Hemophagocytic Lymphohistiocytosis, Familial, 2; Fhl2

Description

Familial hemophagocytic lymphohistiocytosis-2 (FHL2) is an autosomal recessive disorder of immune dysregulation with onset in infancy or early childhood. It is characterized clinically by fever, edema, hepatosplenomegaly, and liver dysfunction. Neurologic impairment, seizures, and ataxia are frequent. Laboratory studies show pancytopenia, coagulation abnormalities, hypofibrinogenemia, and hypertriglyceridemia. There is increased production of cytokines, such as gamma-interferon (IFNG ) and TNF-alpha (OMIM ), by hyperactivation and proliferation of T cells and macrophages. Activity of cytotoxic T cells and NK cells is reduced, consistent with a defect in cellular cytotoxicity. Bone marrow, lymph nodes, spleen, and liver show features of hemophagocytosis. Chemotherapy and/or immunosuppressant therapy may result in symptomatic remission, but the disorder is fatal without bone marrow transplantation (summary by Dufourcq-Lagelouse et al., 1999, Stepp et al., 1999, and Molleran Lee et al., 2004).For a general phenotypic description and a discussion of genetic heterogeneity of FHL, see {267700}.

Clinical Features

Top most frequent phenotypes and symptoms related to Hemophagocytic Lymphohistiocytosis, Familial, 2; Fhl2

  • Seizures
  • Global developmental delay
  • Generalized hypotonia
  • Ataxia
  • Failure to thrive
  • Anemia
  • Hepatomegaly
  • Fever
  • Edema
  • Vomiting

And another 34 symptoms. If you need more information about this disease we can help you.

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Incidence and onset information

— Currently we don't have prevalence information about this disease (Not enough data available about incidence and published cases.)
No data available about the known clinical features onset.

Alternative names

Hemophagocytic Lymphohistiocytosis, Familial, 2; Fhl2 Is also known as hplh2, hlh2.

Researches and researchers

Currently, we don't have any information about doctors, researches or researchers related to this disease. Please contact us if you would like to appear here.


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Hemophagocytic Lymphohistiocytosis, Familial, 2; Fhl2 Recommended genes panels

Panel Name, Specifity and genes Tested/covered
Hereditary Leukemia/Lymphoma Panel.

By Baylor Miraca Genetics Laboratories (United States).

RUNX1, BRCA2, TP53, CBL, CEBPA, SBDS, BRIP1, PALB2, GATA2, ATM, PAX5, PRF1, PTPN11
Specificity
8 %
Genes
100 %
Comprehensive Hereditary Cancer Panel.

By Baylor Miraca Genetics Laboratories (United States).

RUNX1, SDHA, SDHB, SDHC, SDHD, BMPR1A, BRCA1, BRCA2, STK11, EPCAM, TP53, VHL, WT1, CBL, SUFU, CDC73, CDH1, CDK4, CDKN1C, CDKN2A , (...)

View the complete list with 39 more genes
Specificity
2 %
Genes
100 %
Bone Marrow Failure.

By Knight Diagnostic Laboratories - Molecular Diagnostic Center Oregon Health & Science University (United States).

RPL11, RPL35A, RPL5, RPS10, RPS15, RPS19, RPS24, RPS26, RPS27A, RPS7, BRCA2, SRP72, TERT, THPO, TINF2, XRCC2, RPL36, NHP2, NOP10, SBDS , (...)

View the complete list with 23 more genes
Specificity
3 %
Genes
100 %
PRF1 Sequencing.

By Cincinnati Children's Hospital Medical Center Laboratory of Genetics and Genomics Cincinnati Children's Hospital Medical Center (United States).

PRF1
Specificity
100 %
Genes
100 %
Hemophagocytic Lymphohistiocytosis Panel by next generation sequencing (NGS).

By Cincinnati Children's Hospital Medical Center Laboratory of Genetics and Genomics Cincinnati Children's Hospital Medical Center (United States).

SH2D1A, SLC7A7, STX11, STXBP2, CD27, LYST, UNC13D, MAGT1, GATA2, AP3B1, XIAP, ITK, BLOC1S6, PRF1, RAB27A
Specificity
7 %
Genes
100 %
Hemophagocytic Lymphohistiocytosis Deletion/Duplication Panel.

By Cincinnati Children's Hospital Medical Center Laboratory of Genetics and Genomics Cincinnati Children's Hospital Medical Center (United States).

SH2D1A, SLC7A7, STX11, STXBP2, CD27, LYST, UNC13D, MAGT1, AP3B1, XIAP, ITK, BLOC1S6, PRF1, RAB27A
Specificity
8 %
Genes
100 %
PRF1 Deletion/duplication analysis.

By Cincinnati Children's Hospital Medical Center Laboratory of Genetics and Genomics Cincinnati Children's Hospital Medical Center (United States).

PRF1
Specificity
100 %
Genes
100 %
Tier 2: Hereditary Lymphoma and Immunodeficiency Panel.

By Genetic Services Laboratory University of Chicago (United States).

BLM, SH2D1A, BRCA1, BRCA2, STXBP2, FAS, CD27, FASLG, WAS, IKZF1, CASP10, CARD11, TNFRSF13B, ADA, DOCK8, CTLA4, MAGT1, ITK, NBN, NF1 , (...)

View the complete list with 3 more genes
Specificity
5 %
Genes
100 %

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Sources and references

You can check the following sources for additional information.

OMIM Rare Disease Symptoms Checker

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