Disorders of innate immunity [DS:H02525] Primary immunodeficiency disease [DS:H01725]
Description
Late complement component (the final common pathway C5b-C9 components) deficiencies (LCCDs) are all inherited in an autosomal recessive manner. In all cases, homozygous recessive patients have greatly reduced levels of the respective complement component. Generally, patients with deficiencies of C5, C6, C7, or C8 are particularly susceptible to systemic infections with Neisseria meningitidies and N. gonorrhoeae. Infections are rarely fulminant but are often recurrent and frequently involve unusual serotypes of the organism.
Category
Primary immunodeficiency
Brite
Human diseases in ICD-11 classification [BR:br08403]
04 Diseases of the immune system
Primary immunodeficiencies
4A00 Primary immunodeficiencies due to disorders of innate immunity
H00103 Late complement pathway defects
Pathway-based classification of diseases [BR:br08402]
Immune system
nt06513 Complement cascade
H00103 Late complement pathway defects
Primary immunodeficiency diseases: an update from the International Union of Immunological Societies Primary Immunodeficiency Diseases Classification Committee.
Wang X, Fleischer DT, Whitehead WT, Haviland DL, Rosenfeld SI, Leddy JP, Snyderman R, Wetsel RA
Title
Inherited human complement C5 deficiency. Nonsense mutations in exons 1 (Gln1 to Stop) and 36 (Arg1458 to Stop) and compound heterozygosity in three African-American families.
Macular degeneration is the physical breakdown of the central portion of the retina called the macula. Age-related macular degeneration (AMD/ARMD) is the leading cause of blindness. AMD is a complex disease caused by the combination of genetic predisposition and environmental factors. Using genome linkage scan and association studies, multiple potentially causative genes have been identified. In AMD, there are two phenotypes, atrophic/ dry and neovascular/ wet. The former is characterized by the geographic atrophy due to death of retinal pigment epithelium, and the latter is usually characterized by the abnormal growth of new blood vessels under the macula, which causes severe loss of vision. While wet AMD can be treated by the inhibition of vascular endothelial growth factor or photodynamic therapy, so far there are no available treatments for dry AMD.
Category
Nervous system disease
Brite
Human diseases in ICD-11 classification [BR:br08403]
09 Diseases of the visual system
Disorders of the eyeball posterior segment
Disorders of the retina
9B75 Macular disorders
H00821 Age-related macular degeneration
Pathway-based classification of diseases [BR:br08402]
Cellular processes
nt06535 Efferocytosis
H00821 Age-related macular degeneration
nt06527 Necroptosis
H00821 Age-related macular degeneration
Immune system
nt06513 Complement cascade
H00821 Age-related macular degeneration
nt06517 TLR signaling
H00821 Age-related macular degeneration
Schultz DW, Klein ML, Humpert AJ, Luzier CW, Persun V, Schain M, Mahan A, Runckel C, Cassera M, Vittal V, Doyle TM, Martin TM, Weleber RG, Francis PJ, Acott TS
Title
Analysis of the ARMD1 locus: evidence that a mutation in HEMICENTIN-1 is associated with age-related macular degeneration in a large family.
Rivera A, Fisher SA, Fritsche LG, Keilhauer CN, Lichtner P, Meitinger T, Weber BH
Title
Hypothetical LOC387715 is a second major susceptibility gene for age-related macular degeneration, contributing independently of complement factor H to disease risk.
Zareparsi S, Buraczynska M, Branham KE, Shah S, Eng D, Li M, Pawar H, Yashar BM, Moroi SE, Lichter PR, Petty HR, Richards JE, Abecasis GR, Elner VM, Swaroop A
Title
Toll-like receptor 4 variant D299G is associated with susceptibility to age-related macular degeneration.
Seddon JM, Yu Y, Miller EC, Reynolds R, Tan PL, Gowrisankar S, Goldstein JI, Triebwasser M, Anderson HE, Zerbib J, Kavanagh D, Souied E, Katsanis N, Daly MJ, Atkinson JP, Raychaudhuri S
Title
Rare variants in CFI, C3 and C9 are associated with high risk of advanced age-related macular degeneration.
