![]() | Anemia, pienikokoisuus, sydänvika ja kehitysvamma |
Iho on kalpea ja helposti ruhjoutuva. Pigmenttimuutokset, ylipigmentoituminen ja maitokahvin väriset läiskät ovat tavanomaisia. Pää voi olla pienikokoinen, samoin kuin leuka. Silmävärve, korvien epämuotoisuus ja kuurous ovat osa sairautta.
Munuaisepämuodostumat kuuluvat niinikään taudinkuvaan. Kaksoismunuainen, hevosenkenkämunuainen ja munuaisten puutuminen saattavat nekin kuulua oireisiin.
Fanconin anemiassa verihiukkasten vähentyminen ja retikuloottien sekä neuronisolujen kato ovat tyypillisiä piirteitä. Sairauden A-tyypissä geenvirheen alue (16q24.3) sijaitsee 16. kromosomissa. C-tyypissä perimäaineen virhe on 9. kromisomissa geenialueella 9q22.3 ja D-tyypissä taas 3. kromosomissa alueella 3p26-p22. E-tyypissä geenivirhe on paikannettu 6. kromosomiin (6p22-p21). Arvioidaan, että tautityyppejä tai taudin komplementtityyppejä olisi kaikkiaan kahdeksan. Niidenkin sisällä esiintyy vielä erilaisia variantteja (vastingeenimuunnelmia).
Fanconin anemia on yleisin Etelä-Afrikan valkoisen väestön piirissä (1/22.000 asukasta kohti) ja Ashkenazi-juutalaisväestön piirissä Israelissa (/30.000). Muualla esiintyvyys on luokkaa 1/360.000. Guido Fanconi kuvasi sairauden ensimmäisenä v. 1927. Sen jälkeen siitä on läydetty useita muunnelmia. Kaikille on ollut yhteistä peittyvä periytyvyys.
Lisätietoja:
Anemia, Fanconi, eMedicine
FANCONI ANEMIA; FA, OMIM
FANCONI ANEMIA,
COMPLEMENTATION GROUP A; FANCA, OMIM
FANCONI ANEMIA,
COMPLEMENTATION GROUP B; FANCB, OMIM
FANCONI ANEMIA,
COMPLEMENTATION GROUP C; FANCC, OMIM
FANCONI ANEMIA,
COMPLEMENTATION GROUP D; FANCD, OMIM
FANCONI ANEMIA,
COMPLEMENTATION GROUP E; FANCE, OMIM
Fanconi Anemia Research Fund Home Page
Fanconi Mutation Database
Fanconi Anemia,
Jewish Genetic Diseases, A Mazornet Guide
Fanconi Anemia, Family
Village
Fanconi anemia
Yahoo! Directory Fanconi Anemia
Images in
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The New England Journal of Medicine 1993 Oct 14;329(16):1168
Fanconi anemia genes are
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Central BMC
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Molecular and genealogical evidence for a founder effect in Fanconi anemia
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Kari Viitapohja 29.3.2000, 18.3.200