Li–Fraumeni syndrome | li-fraumeni syndrome

Li–FraumenisyndromeFromWikipedia,thefreeencyclopediaJumptonavigationJumptosearchLi–FraumenisyndromeOthernamesSarcomafamilysyndromeofLiandFraumeniLi–FraumenisyndromeisinheritedviaanautosomaldominantmannerSpecialtyOncology,medicalgenetics,neurology Li–Fraumenisyndromeisarare,autosomaldominant,hereditarydisorder[1]thatpredisposescarrierstocancerdevelopment.ItwasnamedaftertwoAmericanphysicians,FrederickPeiLiandJosephF.Fraumeni,Jr.,whofirstrecognizedthesyndromeafterreviewingthemedicalrecordsanddeathcertificatesof648childhoodrhabdomyosarcomapatients.[2]Thissyndromeisalsoknownasthesarcoma,breast,leukaemiaandadrenalgland(SBLA)syndrome.Thesyndromeislinkedtogermlinemutationsofthep53tumorsuppressorgene,[3]whichencodesatranscriptionfactor(p53)thatnormallyregulatesthecellcycleandpreventsgenomicmutations.Themutationscanbeinherited,orcanarisefrommutationsearlyinembryogenesis,orinoneoftheparent'sgermcells.Contents1Presentation2Pathology2.1Clinical3Diagnosis4Management4.1Chompretcriteria4.2Recommendations4.3Suggestions5Epidemiology6Seealso7References8Furtherreading9ExternallinksPresentation[edit]Li–Fraumenisyndromeischaracterizedbyearlyonsetofcancer,awidevarietyoftypesofcancers,anddevelopmentofmultiplecancersthroughoutone'slife.[4]Pathology[edit]Thissectionneedsadditionalcitationsforverification.Pleasehelpimprovethisarticlebyaddingcitationstoreliablesources.Unsourcedmaterialmaybechallengedandremoved.(February2016)(Learnhowandwhentoremovethistemplatemessage)LFS1:MutationsinTP53Normalconditions:[citationneeded]TP53isatumorsuppressorgeneonchromosome17thatnormallyassistsinthecontrolofcelldivisionandgrowththroughactiononthenormalcellcycle.TP53typicallybecomeexpressedduetocellularstressors,suchasDNAdamage,andcanhaltthecellcycletoassistwitheithertherepairofrepairableDNAdamage,orcaninduceapoptosisofacellwithirreparabledamage.Therepairof"bad"DNA,ortheapoptosisofacell,preventstheproliferationofdamagedcells.[citationneeded]Mutantconditions:MutationsofTP53caninhibititsnormalfunction,andallowcel


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