Hyper-IgM syndrome type 1, 2, 3, 4 and 5[2][3][4][5][6]
Diagnostic method
MRI, Chest radiography[1]
Treatment
Allogeneic hematopoietic cell transplantation[7]
Hyper IgM syndrome is a rare primary immune deficiency disorders characterized by low or absent levels of serum IgG, IgA, IgE and normal or increased levels of serum IgM.[8]
They are resulting from mutations in the pathway from B-cell activation to isotype class switching. Patients with HIGM are usually diagnosed within the first two years of life and experience severe immunosuppression. This syndrome is also known as immunoglobulin class switch recombination (Ig-CSR) deficiencies.[9] The most common causes are mutations in the CD40 Ligand (CD40LG) gene located at Xq26.3-27 leading to X-linked HIGM (XHIGM) in males.[10]
^ abCite error: The named reference emed was invoked but never defined (see the help page).
^Cite error: The named reference om1 was invoked but never defined (see the help page).
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^"OMIM Entry – # 606843 – IMMUNODEFICIENCY WITH HYPER-IgM, TYPE 3; HIGM3". omim.org. Retrieved 16 November 2016.
^Cite error: The named reference om5 was invoked but never defined (see the help page).
^"OMIM Entry – 608184 – IMMUNODEFICIENCY WITH HYPER-IgM, TYPE 4; HIGM4". omim.org. Retrieved 2 January 2018.
^Cite error: The named reference gen was invoked but never defined (see the help page).
^Leven, Emily A.; Maffucci, Patrick; Ochs, Hans D.; Scholl, Paul R.; Buckley, Rebecca H.; Fuleihan, Ramsay L.; Geha, Raif S.; Cunningham, Coleen K.; Bonilla, Francisco A.; Conley, Mary Ellen; Ferdman, Ronald M.; Hernandez-Trujillo, Vivian; Puck, Jennifer M.; Sullivan, Kathleen; Secord, Elizabeth A. (July 2016). "Hyper IgM Syndrome: a Report from the USIDNET Registry". Journal of Clinical Immunology. 36 (5): 490–501. doi:10.1007/s10875-016-0291-4. ISSN 0271-9142. PMC 5039943. PMID 27189378.
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deficiency. Normal numbers of B cells with decreased IgG and IgA and increased IgM: Hyper-IgMsyndromes Normal numbers of B cells with isotype or light chain...