Discoveries of single-gene defects underlying inborn errors of immunity in single patients
| Gene producta | Inheritance and alleleb | Mousec | References | Citations (10/2014), ISI |
| Combined immunodeficiencies | ||||
| CD45 | ARg, LOF | Prior | Kung et al., 2000 | 179 |
| CD3-ε | ARg, hM/LOF | Prior | Soudais et al., 1993 | 62 |
| CD3-ζ | AR, LOFh | Prior | Rieux-Laucat et al., 2006 | 48 |
| Coronin 1A | ARg, LOF | Concomitantly | Shiow et al., 2008 | 80 |
| DNA-PK | ARf, hM | Prior | van der Burg et al., 2009 | 83 |
| CD8-α | ARf, LOF | Prior | de la Calle-Martin et al., 2001 | 40 |
| Tapasin | AR, LOF | Prior | Yabe et al., 2002 | 22 |
| LCK | AR, LOF | Prior | Hauck et al., 2012 | 10 |
| UNC119d | ADi, LOF | Unrelatedi | Gorska and Alam, 2012 | 12 |
| CARD11 | ARf, LOF | Prior | Stepensky et al., 2013 k | 18 |
| OX40 | ARf, LOF | Prior | Byun et al., 2013 | 4 |
| Syndromic combined immunodeficiencies | ||||
| WIP | ARf, LOF | Prior | Lanzi et al., 2012 | 23 |
| RNF168 | ARg, LOF | Later | Stewart et al., 2009 | 295 |
| TYK2 | ARf, LOF | Prior | Minegishi et al., 2006 | 244 |
| STAT5B | ARf, LOF | Prior | Kofoed et al., 2003 | 236 |
| IKAROS | ADi, hM | Prior | Goldman et al., 2012 | 5 |
| Antibody deficiencies | ||||
| λ5 | ARg, LOF | Prior | Minegishi et al., 1998 | 152 |
| Ig-α | AR, LOF | Prior | Minegishi et al., 1999a | 111 |
| Ig-β | AR, hM;LOF | Prior | Dobbs et al., 2007; Ferrari et al., 2007 | 30/29 |
| BLNK | AR, LOF | Concomitantly | Minegishi et al., 1999b | 188 |
| PI3K p85α | ARf, LOF | Prior | Conley et al., 2012 | 33 |
| CD81 | ARf, LOF | Prior | van Zelm et al., 2010 | 102 |
| CD20 | ARf, LOF | Prior | Kuijpers et al., 2010 | 97 |
| CD21 | ARg, LOF | Prior | Thiel et al., 2012 | 28 |
| Kappa chain | ARg, LOF | Prior | Stavnezer-Nordgren et al., 1985 | 27 |
| PKCδ | ARf, LOF | Prior | Kuehn et al., 2013; Salzer et al., 2013 l | 9/8 |
| Diseases of immune dysregulation | ||||
| CD25 | ARf, LOF | Prior | Sharfe et al., 1997 | 178 |
| Fas-ligand | ADi, LOF | Prior | Wu et al., 1996 | 300 |
| NRASe | ADi, GOF | No GOF | Oliveira et al., 2007 | 81 |
| Phagocyte disorders | ||||
| Rac2 | ADi, LOF | Prior | Ambruso et al., 2000 | 223 |
| C/EBPε | AR, LOF | Prior | Lekstrom-Himes et al., 1999 | 105 |
| P40 phox | ARg, LOF | Prior | Matute et al., 2009 | 125 |
| IL12p40 | ARf, LOF | Prior | Altare et al., 1998 | 263 |
| IFN-γR1 | ARf, LOF | Prior | Jouanguy et al., 1996 m | 552 |
| IFN-γR2 | AR, LOF | Prior | Dorman and Holland, 1998 | 286 |
| IRF8 | AR, LOF | Prior | Hambleton et al., 2011 n | 128 |
| Defects of innate immunity | ||||
| IκBα | ADi, GOF | No GOF | Courtois et al., 2003 | 148 |
| STAT2 | ARf, LOFo | Prior | Hambleton et al., 2013 | 3 |
| TRAF3 | ADi, LOF | Prior | Pérez de Diego et al., 2010 | 81 |
| IL17RA | ARf, LOF | Prior | Puel et al., 2011 p | 218 |
| APOL1 | ARg, LOF | Absent | Vanhollebeke et al., 2006 | 63 |
| Auto-inflammatory disorders | ||||
| IL1RN | ARf, LOF | Prior | Reddy et al., 2009 q | 139 |
| Complement deficiencies | ||||
| C1qB | AR, LOF | Later | McAdam et al., 1988 | 41 |
| C1qC | AR, LOF | Later | Petry et al., 1995 | 27 |
| C1s | AR, LOF | Not done | Inoue et al., 1998 | 11 |
| C3 | ARf, LOF | Later | Botto et al., 1990 | 41 |
| C9 | ARg, LOF | Not done | Witzel-Schlömp et al., 1997 | 18 |
| Factor B | ARg, LOF | Prior | Slade et al., 2013 | 1 |
| Factor H | ARg, LOF | Later | Ault et al., 1997 | 98 |
| MASP2 | AR, LOF | Not done | Stengaard-Pedersen et al., 2003 | 119 |
| Ficolin 3 | AR, LOF | Absent | Munthe-Fog et al., 2009 | 63 |
| Total: 49 of 232 (21%) proven PIDs |
| Gene producta | Inheritance and alleleb | Mousec | References | Citations (10/2014), ISI |
| Combined immunodeficiencies | ||||
| CD45 | ARg, LOF | Prior | Kung et al., 2000 | 179 |
| CD3-ε | ARg, hM/LOF | Prior | Soudais et al., 1993 | 62 |
| CD3-ζ | AR, LOFh | Prior | Rieux-Laucat et al., 2006 | 48 |
| Coronin 1A | ARg, LOF | Concomitantly | Shiow et al., 2008 | 80 |
| DNA-PK | ARf, hM | Prior | van der Burg et al., 2009 | 83 |
| CD8-α | ARf, LOF | Prior | de la Calle-Martin et al., 2001 | 40 |
| Tapasin | AR, LOF | Prior | Yabe et al., 2002 | 22 |
| LCK | AR, LOF | Prior | Hauck et al., 2012 | 10 |
| UNC119d | ADi, LOF | Unrelatedi | Gorska and Alam, 2012 | 12 |
| CARD11 | ARf, LOF | Prior | Stepensky et al., 2013 k | 18 |
| OX40 | ARf, LOF | Prior | Byun et al., 2013 | 4 |
| Syndromic combined immunodeficiencies | ||||
| WIP | ARf, LOF | Prior | Lanzi et al., 2012 | 23 |
| RNF168 | ARg, LOF | Later | Stewart et al., 2009 | 295 |
| TYK2 | ARf, LOF | Prior | Minegishi et al., 2006 | 244 |
| STAT5B | ARf, LOF | Prior | Kofoed et al., 2003 | 236 |
| IKAROS | ADi, hM | Prior | Goldman et al., 2012 | 5 |
| Antibody deficiencies | ||||
| λ5 | ARg, LOF | Prior | Minegishi et al., 1998 | 152 |
| Ig-α | AR, LOF | Prior | Minegishi et al., 1999a | 111 |
| Ig-β | AR, hM;LOF | Prior | Dobbs et al., 2007; Ferrari et al., 2007 | 30/29 |
| BLNK | AR, LOF | Concomitantly | Minegishi et al., 1999b | 188 |
| PI3K p85α | ARf, LOF | Prior | Conley et al., 2012 | 33 |
| CD81 | ARf, LOF | Prior | van Zelm et al., 2010 | 102 |
| CD20 | ARf, LOF | Prior | Kuijpers et al., 2010 | 97 |
| CD21 | ARg, LOF | Prior | Thiel et al., 2012 | 28 |
| Kappa chain | ARg, LOF | Prior | Stavnezer-Nordgren et al., 1985 | 27 |
| PKCδ | ARf, LOF | Prior | Kuehn et al., 2013; Salzer et al., 2013 l | 9/8 |
| Diseases of immune dysregulation | ||||
| CD25 | ARf, LOF | Prior | Sharfe et al., 1997 | 178 |
| Fas-ligand | ADi, LOF | Prior | Wu et al., 1996 | 300 |
| NRASe | ADi, GOF | No GOF | Oliveira et al., 2007 | 81 |
| Phagocyte disorders | ||||
| Rac2 | ADi, LOF | Prior | Ambruso et al., 2000 | 223 |
| C/EBPε | AR, LOF | Prior | Lekstrom-Himes et al., 1999 | 105 |
| P40 phox | ARg, LOF | Prior | Matute et al., 2009 | 125 |
| IL12p40 | ARf, LOF | Prior | Altare et al., 1998 | 263 |
| IFN-γR1 | ARf, LOF | Prior | Jouanguy et al., 1996 m | 552 |
| IFN-γR2 | AR, LOF | Prior | Dorman and Holland, 1998 | 286 |
| IRF8 | AR, LOF | Prior | Hambleton et al., 2011 n | 128 |
| Defects of innate immunity | ||||
| IκBα | ADi, GOF | No GOF | Courtois et al., 2003 | 148 |
| STAT2 | ARf, LOFo | Prior | Hambleton et al., 2013 | 3 |
| TRAF3 | ADi, LOF | Prior | Pérez de Diego et al., 2010 | 81 |
| IL17RA | ARf, LOF | Prior | Puel et al., 2011 p | 218 |
| APOL1 | ARg, LOF | Absent | Vanhollebeke et al., 2006 | 63 |
| Auto-inflammatory disorders | ||||
| IL1RN | ARf, LOF | Prior | Reddy et al., 2009 q | 139 |
| Complement deficiencies | ||||
| C1qB | AR, LOF | Later | McAdam et al., 1988 | 41 |
| C1qC | AR, LOF | Later | Petry et al., 1995 | 27 |
| C1s | AR, LOF | Not done | Inoue et al., 1998 | 11 |
| C3 | ARf, LOF | Later | Botto et al., 1990 | 41 |
| C9 | ARg, LOF | Not done | Witzel-Schlömp et al., 1997 | 18 |
| Factor B | ARg, LOF | Prior | Slade et al., 2013 | 1 |
| Factor H | ARg, LOF | Later | Ault et al., 1997 | 98 |
| MASP2 | AR, LOF | Not done | Stengaard-Pedersen et al., 2003 | 119 |
| Ficolin 3 | AR, LOF | Absent | Munthe-Fog et al., 2009 | 63 |
| Total: 49 of 232 (21%) proven PIDs |
The IUIS committee for PIDs has compiled 234 genetic etiologies of PIDs into eight tables, corresponding to the eight categories in this table (Al-Herz et al., 2014). There are in fact only 232 monogenic PIDs, excluding UNC119 and NRAS deficiencies. Only loss- and gain-of-function alleles were considered to define distinct disorders; no difference was made between truly loss-of-function and hypomorphic alleles, despite their definition of distinct clinical phenotypes. We restricted our bibliographic analysis to reports of genetic lesions; some PIDs were biochemically defined before the identification of mutations, including in single patients.
The 51 mutated gene products are indicated for 53 unrelated patients (two conditions were simultaneously described each in two families). With 15 exceptions (Tapasin, Lck, UNC119, WIP, Ikaros, PI3K p85α, CD81, CD20, CD21, p40 phox, IRF8, STAT2, TRAF3, APOL1, and factor B), a second or more patients were subsequently identified (references available upon request; unpublished data). In some families listed herein, one or more deceased siblings were not genetically tested.
Mode of inheritance and nature of the morbid alleles. AR, autosomal recessive (bi-allelic mutations); AD, autosomal dominant; LOF, loss-of-function; hM, hypomorphic; GOF, gain-of-function.
The corresponding knockout mouse was made prior to, concomitantly with, or after the human deficit was described, or not at all.
The UNC119 mutation is not disease-causing as it is in fact a common polymorphism (>1%) in several human populations (http://useast.ensembl.org/Homo_sapiens/Variation/Population?db=core;g=ENSG00000109103;r=17:28546707-28552668;v=rs199714731;vdb=variation;vf=54110701).
The NRAS mutation is disease-causing but was later found to be somatic, not germline, consistent with the previous discovery of NRAS germline mutations in patients with Noonan syndrome (Niemela et al., 2011).
Known consanguineous family and homozygous patients (18 conditions and 18 patients).
Compound heterozygous patients (12 conditions and 12 patients); the others are homozygous but not known to be born to consanguineous parents (15 conditions and 16 patients). PCKδ deficiency was described simultaneously in a consanguineous and in a non-consanguineous family.
Somatic mutations rescued one of the two mutant alleles in a proportion of T cells.
The UNC199, Fas-ligand mutations’ familial segregation were not tested, whereas the Ikaros, NRAS, Rac2, IκBα, and TRAF3 mutations occurred de novo.
The UC119 mutant mouse was made previously but not studied for immunological phenotypes. The human gene had been previously shown to be important for T cell activation.
Another report was published shortly thereafter yet was quoted as unpublished data in this paper (Greil et al., 2013).
Another report was published shortly thereafter (Belot et al., 2013).
Another report was published concomitantly in a multiplex family (Newport et al., 1996).
Two patients with AD IRF8 deficiency and a different immunological and clinical phenotype were reported jointly.
The STAT2 allele might be severely hypomorphic or completely loss-of-function.
AD IL-17F deficiency (in a multiplex family) was reported together with AR IL-17RA deficiency.
Another report was published concomitantly in a multiplex family (Aksentijevich et al., 2009).