Yini i-Voretigene Neparvovec-rzyl: Ukusetshenziswa, Umthamo, Imiphumela Eceleni Nokunye

I-Voretigene neparvovec-rzyl iyindlela yokwelapha ngofuzo eyenza umehluko omkhulu engabuyisela umbono kubantu abanezimo zamehlo ezithile ezigulwa ngokuqhubekayo. Lokhu kwelashwa kusebenza ngokuletha ikhophi enempilo yofuzo ngqo emangqamuzaneni e-retinal yamehlo, okubasiza ukuthi baphinde basebenze kahle.

Ungase uzibuze ngalolu kwelashwa uma wena noma othile omaziyo etholiwe ukuthi unokugula kwe-Leber congenital amaurosis noma i-retinitis pigmentosa ebangelwa ukuguqulwa kofuzo lwe-RPE65. Lokhu kwelashwa kumelele ithemba kubantu ababengenazo izinketho zokwelashwa ezilinganiselwe kakhulu zalezi zimo ezingavamile kodwa ezinzima zombono.

Yini i-Voretigene Neparvovec-rzyl?

I-Voretigene neparvovec-rzyl iyindlela yokuqala yokwelapha ngofuzo evunywe yi-FDA yesifo se-retinal esitholakele. Kuyindlela yokwelashwa yesikhathi esisodwa esebenzisa igciwane elishintshiwe ukuthwala ikhophi esebenzayo yofuzo lwe-RPE65 emangqamuzaneni akho e-retinal.

Umuthi uhamba ngegama lomkhiqizo elithi Luxturna, futhi wenzelwe ngqo abantu abanezinkinga zombono ezivela ekuguqulweni kofuzo lwe-RPE65. Leli fuzo ngokuvamile lisiza amangqamuzana akho e-retinal ukuthi acubungule ukukhanya, kodwa uma linamaphutha, lingaholela ekulahlekelweni umbono oqhubekayo noma ubumfama kusukela ekuzalweni.

Cabanga ngalolu kwelashwa njengokunikeza amangqamuzana akho e-retinal imanuwali abayishodayo. Ukwelashwa akulaphi isimo esingaphansi kofuzo, kodwa kungathuthukisa kakhulu ikhono lakho lokubona ezimweni zokukhanya okuphansi nokuzulazula endaweni yakho ngokuphephile.

Isetshenziselwani i-Voretigene Neparvovec-rzyl?

Le ndlela yokwelapha ngofuzo ilapha ukulahlekelwa umbono okubangelwa ukuguqulwa kofuzo lwe-RPE65 oluqinisekisiwe. Udokotela wakho uzoncoma kuphela lolu kwelashwa uma ukuhlolwa kofuzo kukhombisa ukuthi unalezi zinguquko ezithile futhi unamangqamuzana e-retinal anempilo anele asele.

Ukwelashwa kusiza ikakhulukazi abantu abane-Leber congenital amaurosis, isimo esivame ukubangela izinkinga ezinkulu zokubona kusukela ekuzalweni noma ebuntwaneni. Kungasiza futhi labo abane-retinitis pigmentosa exhunywe ku-RPE65 mutations, lapho umbono uqhubeka uwohloka ngokuhamba kwesikhathi.

Kungenzeka uqaphele ukuthuthuka okukhulu ekuboneni kwakho ebusuku kanye nekhono lokuzulazula ezindaweni ezikhanyayo. Abantu abaningi bathola ukuthi bangakwazi ukuzulazula emakhaya abo kalula kusihlwa noma baqaphele ubuso ezimweni zokukhanya okuphansi ngemuva kokwelashwa.

Isebenza Kanjani I-Voretigene Neparvovec-rzyl?

Lokhu kwelashwa ngomjikelezo wemvelo kusebenza ngokuletha i-RPE65 gene enempilo ngqo emangqamuzaneni akho e-retinal pigment epithelium. Lawa maseli adlala indima ebalulekile emjikelezweni wokubona, esiza ukuguqula ukukhanya kube yizimpawu ubuchopho bakho obuzihumusha njengombono.

Ukwelashwa kusebenzisa i-adeno-associated virus eguquliwe njengemoto yokulethwa. Ungakhathazeki - leli gciwane lenziwe ukuthi liphephe futhi alikwazi ukubangela ukutheleleka noma ukugula. Livele nje lisebenze njengomthunywa omncane, othwala i-gene yokwelapha ngqo lapho idinga ukuya khona esweni lakho.

Uma i-gene enempilo ifinyelela emangqamuzaneni akho e-retinal, angaqala ukukhiqiza iphrotheni ye-RPE65 abayishodayo. Le nqubo ngokuvamile ithatha izinyanga eziningana ukukhombisa imiphumela ephelele, futhi ukuthuthuka kungahlala isikhathi eside ngoba i-gene iba yingxenye yomshini wakho weselula.

Kufanele Ngiyithathe Kanjani I-Voretigene Neparvovec-rzyl?

Awuyithathi ngempela le mithi ngendlela yendabuko. Kunalokho, uchwepheshe we-retinal uzoyijova ngqo esweni lakho ngesikhathi senqubo yokuhlinzwa eyenziwa ekamelweni lokusebenza.

Inqubo ngokwayo ihlanganisa ukwenza ukusikwa okuncane esweni lakho bese ujova ngokucophelela ukwelashwa kwe-gene ngaphansi kwe-retina yakho. Udokotela ohlinzayo uzokwelapha iso elilodwa kuqala, bese elinda okungenani izinsuku eziyisithu esithupha ngaphambi kokwelapha iso lesibili uma womabili amehlo edinga ukwelashwa.

Ngaphambi kokuthi uqhubeke nenqubo yakho, kuzodingeka uqale ukuthatha ama-corticosteroids omlomo ukunciphisa ukuvuvukala. Udokotela wakho ngokuvamile uzonquma le mithi iqala ezinsukwini ezintathu ngaphambi kokujova kwakho futhi iqhubeke izinsuku eziningi ngemuva kwalokho. Lokhu kusiza iso lakho ukuthi liphole kahle futhi kunciphisa ingozi yezinkinga.

Kufanele Ngiyithathe Isikhathi Esingakanani I-Voretigene Neparvovec-rzyl?

Lokhu ukwelashwa okukodwa ngeso ngalinye, ngakho ngeke udinge imijovo ephindaphindiwe. Ukwelashwa ngofuzo kuklanyelwe ukuhlinzeka ngezinzuzo eziqhubekayo, okungenzeka iminyaka eminingi noma unomphela.

Noma kunjalo, kuzodingeka uthathe imithi ye-corticosteroid cishe isonto lonke - ngokuvamile iqala ezinsukwini ezintathu ngaphambi kokujova kwakho futhi iqhubeke izinsuku eziningi ngemuva kwalokho. Udokotela wakho uzokunikeza imiyalelo ethile mayelana nokuthi uzoqala nini futhi uyeke nini le mithi esekelayo.

Ukuqokwa okulandelayo kwesikhathi eside kuzobaluleka ukuqapha impendulo yakho ekwelashweni nokubheka noma yimiphi imiphumela elibazisekile. Uchwepheshe wakho we-retinal uzofuna ukukubona njalo, ikakhulukazi ngonyaka wokuqala ngemuva kokwelashwa, ukuze ulandelele ukuthuthuka kwakho kombono nempilo yamehlo iyonke.

Yiziphi Izimo Ezingezinhle Ze-Voretigene Neparvovec-rzyl?

Njenganoma iyiphi inqubo yezokwelapha ebandakanya iso, lokhu kwelashwa ngofuzo kungabangela ezinye izimo ezingezinhle, nakuba eziningi zingezesikhashana futhi zilawuleka. Ukuqonda okufanele ukulindele kungakusiza ukuthi ulungiselele futhi wazi ukuthi ungaxhumana nini nethimba lakho lezempilo.

Imiphumela emibi evame kakhulu ongase uyithole ihlanganisa ukubomvu kweso okwesikhashana, ubuhlungu obuncane, noma umuzwa wokuthi kukhona okuthile esweni lakho. Lezi zimpawu ngokuvamile zithuthuka ezinsukwini ezimbalwa kuya emavikini ngemuva kwenqubo yakho.

Nawa amanye amiphumela emibi ebikwa kaningi:

• Ukwanda kwengcindezi yeso okwesikhashana
• Ukubomvu kweso nokucasuka
• Ubuhlungu beso obuncane kuya kobumodareyithi
• Izinhlayiya ezincane ezintantayo embonweni wakho
• Ukuzwela ekukhanyeni
• Amehlo anamanzi

Lezi zinto ezivamile ngokuvamile ziyazixazulula zodwa njengoba iso lakho liphila ngemva kwenqubo yokujova.

Abanye abantu bangase bahlangabezane nemiphumela emibi kakhulu kodwa engavamile edinga ukunakekelwa kwezempilo ngokushesha:

• Ubuhlungu obukhulu emehlweni obungathuthuki ngemithi
• Ushintsho olungazelelwe embonweni noma ukulahlekelwa
• Izimpawu zokutheleleka kwamehlo njengokubomvu okwanda, ukukhipha, noma umkhuhlane
• Ukucindezela kwamehlo okuphezulu okuqhubekayo
• Ukuqhekeka kwe-retinal, nakuba lokhu kungavamile

Uma uqaphela noma yiziphi zalezi zimpawu ezingathi sína, xhumana nodokotela wakho wamehlo ngokushesha. Ukwelashwa okusheshayo kuvame ukuvimbela izinkinga futhi kuvikele umbono wakho.

Ubani Ongafanele Athathe i-Voretigene Neparvovec-rzyl?

Le gene therapy ayifanele wonke umuntu onezinkinga zombono. Udokotela wakho uzohlola ngokucophelela ukuthi ungumuntu ofanelekayo yini ngokusekelwe ezintweni eziningana ezibalulekile.

Ngeke ukwazi ukuthola lokhu kwelashwa uma ukuhlolwa kwezakhi zofuzo kungaqinisekisi ukuthi i-RPE65 mutations iyimbangela yokulahlekelwa umbono wakho. Ukwelashwa kwenzelwe ngqo leli phutha lezakhi zofuzo futhi ngeke kusize ngezinye izinhlobo zesifo se-retinal esizuzwe ngofuzo.

Udokotela wakho uzodinga futhi ukuqinisekisa ukuthi unamaseli e-retinal anempilo anele ukuze ukwelashwa kuphumelele. Uma ukuguga kwe-retinal yakho kuthuthuke kakhulu, kungase kungabi namaseli anele aphilayo ukuze azuze ku-gene therapy.

Abantu abanezifo zamehlo ezisebenzayo noma ukuvuvukala okukhulu kufanele balinde kuze kube yilapho lezi zimo zelashwa ngaphambi kokucabangela i-gene therapy. Ukwengeza, uma unezifo ezithile zokuphuma igazi noma uthatha imithi yokunciphisa igazi, udokotela wakho angase adinge ukulungisa uhlelo lwakho lokwelashwa noma isikhathi.

Igama Lomkhiqizo le-Voretigene Neparvovec-rzyl

Igama lomkhiqizo le-voretigene neparvovec-rzyl yi-Luxturna. Le mithi yenziwa yi-Spark Therapeutics futhi yayiyindlela yokuqala ye-gene therapy eyavunywa yi-FDA yesifo se-retinal esizuzwe ngofuzo.

Uma ukhuluma ngale ndlela yokwelapha neqembu lakho lezempilo noma inkampani yomshuwalense, ungase uzwe kubhekiselwa kuyo ngegama layo elivamile noma igama lomkhiqizo. Zombili zibhekisela emuthini ofanayo, ngakho-ke ungadideki uma abahlinzeki abahlukene besebenzisa amagama ahlukene.

I-Luxturna itholakala kuphela ngezikhungo zokwelapha ezikhethekile ezinolwazi ngemithi yofuzo kanye nokuhlinzwa kwe-retinal. Udokotela wakho wamehlo uzodinga ukukuthumela kwelinye lala maziko aqinisekisiwe uma ungumuntu ofanelekayo ukwelashwa.

Ezinye izindlela zokwelapha i-Voretigene Neparvovec-rzyl

Njengamanje, zikhona ezinye izindlela ezimbalwa zokwelapha ngemithi yofuzo yokulahlekelwa umbono okuhlobene ne-RPE65. Ukwelashwa kwendabuko okufana nezibuko, amalensi okuxhumana, noma amaconsi amehlo avamile angeke akwazi ukubhekana nesizathu esingaphansi kofuzo sesimo sakho.

Abanye abantu bayazuza ezinsizeni zokubona eziphansi ezifana namadivayisi akhulisayo, ukukhanya okukhethekile, noma ukuqeqeshwa kokuhamba. Lezi zinyathelo zokusekela zingakusiza ukuthi usebenzise ngokugcwele umbono wakho osele futhi ugcine ukuzimela emisebenzini yansuku zonke.

Abacwaningi basebenzela ngentshiseko ukuthuthukisa ezinye izindlela zokwelapha ngemithi yofuzo yezinhlobo ezahlukene zezifo ze-retinal ezizuzwe ngefa. Ngenkathi lezi zingezona ezinye izindlela ze-Luxturna ngokuqondile, zingase zibe izinketho kubantu abanezinguquko ezahlukene zofuzo esikhathini esizayo.

Ukwelashwa ngamaseli esiqu kanye nokunye ukwelashwa okukhuthazayo nakho kuyafundwa, nakuba lokhu kusekusezingeni lokuhlola futhi akukavunyelwa ukwelapha izifo ze-retinal ezizuzwe ngefa.

Ingabe i-Voretigene Neparvovec-rzyl ingcono kunezinye izindlela zokwelapha?

Kubantu abane-RPE65 mutations, imithi yofuzo njengamanje iyona kuphela indlela yokwelapha engabhekana nesizathu esiyisisekelo sokulahlekelwa kwabo umbono. Lokhu kuyenza ihluke ngokusisekelo kwezinye izindlela eziphatha kuphela izimpawu.

Ngokungafani nezinsiza zendabuko zokubona okuncane ezikusiza ukuthi ujwayele ukulahlekelwa umbono, ukwelashwa ngomjovo wemvelo kunethuba lokubuyisela eminye imisebenzi yokubona. Izivivinyo zomtholampilo zikhombisile ukuthi abantu abaningi bathola ukuthuthuka okukhulu emandleni abo okuzulazula ezindaweni ezinokukhanya okuncane.

Kodwa-ke, kubalulekile ukuba nethemba eliqotho. Ukwelashwa ngomjovo wemvelo ngokuvamile akubuyiseli umbono ovamile noma akusizi ekufundeni izinhlamvu ezincane. Kunalokho, ngokuvamile kunikeza ukuthuthuka okwanele ukuze kuthuthukiswe ukuhamba kanye nekhwalithi yempilo ngendlela enkulu.

Ukusebenza kokwelashwa kuyahlukahluka kumuntu nomuntu, kuye ngezinto ezinjengokuthi ingakanani inyama ye-retinal esele iphilile nokuthi sekuyisikhathi esingakanani unezinkinga zokubona. Udokotela wakho angakusiza ukuthi uqonde ukuthi yiluphi izinga lokuthuthuka elingaba ngokoqobo esimweni sakho esithile.

Imibuzo Evame Ukubuzwa Mayelana ne-Voretigene Neparvovec-rzyl

Ingabe i-Voretigene Neparvovec-rzyl iphephile ezinganeni?

Yebo, lokhu kwelashwa ngomjovo wemvelo kuvunyelwe ukusetshenziswa ezinganeni, futhi empeleni, ukwelashwa kwangaphambi kwesikhathi kungaholela emiphumeleni engcono. Izinhlelo zokubona zezingane eziqhubekayo zingase zithuthuke kakhulu ekwelashweni kunamehlo abantu abadala asejwayele ukulahlekelwa umbono eminyakeni eminingi.

Iphrofayili yokuphepha ibonakala ifana phakathi kwezingane nabantu abadala, nakuba iziguli ezincane zingase zidinge ukucatshangelwa okukhethekile ngemithi ye-corticosteroid kanye nokunakekelwa okulandelayo. Udokotela wakho wezingane zamehlo uzosebenza eduze nawe ukuze aqinisekise ukuthi ukwelashwa kufanele esimweni sengane yakho esithile.

Ngingenzani uma ngizwa ubuhlungu obukhulu emehlweni ngemva kokwelashwa?

Xhumana nodokotela wakho wamehlo ngokushesha uma uzwa ubuhlungu obukhulu noma obuqhubekayo emehlweni ngemva komjovo wakho wokwelashwa ngomjovo wemvelo. Nakuba ukungakhululeki okuthile kuvamile ngemva kwenqubo, ubuhlungu obukhulu bungase bubonise izinkinga ezidinga ukwelashwa okusheshayo.

Ungalindi ukubona ukuthi ubuhlungu buyathuthuka yini ngokwabo. Ukuphazamisa ngokushesha kuvame ukuvimbela izinkinga ezingathi sína futhi kuvikele umbono wakho. Ithimba lakho lokunakekelwa kwezempilo lingathanda ukukuhlola futhi lithole ukuthi konke kulungile kunokuthi liphuthelwe yinkinga ebingelashwa kalula.

Ngizobona nini ukuthuthuka kombono ngemva kokwelashwa?

Abantu abaningi ababoni izinguquko ngokushesha embonweni wabo ngemva kokwelashwa ngofuzo. Ukuthuthuka kuvame ukuthuthuka kancane kancane ezinyangeni ezimbalwa njengoba i-gene yokwelapha iqala ukusebenza kumaseli akho e-retinal.

Abanye abantu baqala ukuqaphela umbono ongcono ebusuku ezinyangeni ezimbalwa, kanti abanye bangathatha unyaka ukubona izinzuzo eziphelele. Udokotela wakho uzoqapha inqubekela phambili yakho ngezivivinyo ezivamile zombono futhi angakusiza ukuthi ulandelele ukuthuthuka okungase kube kancane ekuqaleni.

Yiba nesineke ngenqubo - amaseli akho e-retinal adinga isikhathi sokuqala ukukhiqiza amaprotheni abewashoda futhi asungule izindlela ezintsha zokubona.

Ngingakwazi yini ukuphindwa kokwelashwa uma umbono wami uba mubi futhi?

Njengamanje, ukwelashwa ngofuzo kuhloselwe njengokwelashwa okukodwa ngeso ngalinye. I-gene yokwelapha yenzelwe ukuhlinzeka ngezinzuzo ezihlala njalo, futhi abantu abaningi bagcina ukuthuthuka kwabo kombono iminyaka eminingi ngemva kokwelashwa.

Nokho, lokhu kuseyindlela yokwelapha entsha, ngakho idatha yesikhathi eside mayelana nokwelashwa okuphindwayo ayitholakali okwamanje. Uma umbono wakho uba mubi kakhulu esikhathini esizayo, xoxa ngezinketho zakho nochwepheshe wakho we-retinal.

Kufanelekile ukuqaphela ukuthi ukwelashwa ngofuzo akuyeki konke ukuqhubeka kwesifo se-retinal, ngakho ezinye izinguquko ezinensayo ngokuhamba kwesikhathi ngeke zilindeleke. Ukuqapha njalo kusiza ukuhlukanisa phakathi kwezinguquko ezijwayelekile zokuguga nezinkinga ezingase zidinge ukwelashwa okwengeziwe.

Ingabe umshwalense wami uzosibekela ukwelashwa kwe-Voretigene Neparvovec-rzyl?

Izinhlelo eziningi zomshuwalense ziyayihlanganisa i-gene therapy yezinguquko ze-RPE65, kodwa ukuhlanganisa kungahluka kakhulu phakathi kwabahlinzeki nezinhlelo. Lokhu kwelashwa kubiza kakhulu, ngakho-ke ukusebenza nenkampani yakho yomshuwalense ekuqaleni kwenqubo kubalulekile.

Ithimba lakho lokunakekelwa kwezempilo kanye nesikhungo sokwelapha ngokuvamile kungasiza ngemvume yomshuwalense ngaphambi kwesikhathi kanye nezikhalo uma kudingeka. Banolwazi lokuzulazula ezindabeni zokuhlanganisa futhi bangahlinzeka ngemibhalo inkampani yakho yomshuwalense eyidingayo.

Uma unenkinga ngokuhlanganiswa komshuwalense, buza mayelana nezinhlelo zokusiza iziguli noma izivivinyo zomtholampilo ezingenza ukwelashwa kufinyeleleke kalula. Ungayeki uma ekuqaleni uthola ukuphika - abantu abaningi baphumelela ekudluleni lezi zinqumo ngosekelo olufanele.