Yini i-Viltolarsen: Ukusetshenziswa, Umthamo, Imiphumela Eceleni nokuningi

I-Viltolarsen iyimithi kadokotela eyenzelwe ngqo ukwelapha i-Duchenne muscular dystrophy (DMD) ezigulini eziqinisekiswe ukuthi zine-mutation efanelekayo ekweqeni i-exon 53. Le mithi ekhethekile isebenza ngokusiza amaseli emisipha akhiqize inguqulo eguquliwe yeprotheni ye-dystrophin, ebalulekile ekusebenzeni kwemisipha enempilo.

Uma wena noma othandiweyo wakho otholakale enalesi sifo esithile se-DMD, i-viltolarsen imelela indlela yokwelapha eqondiwe engasiza ekunciphiseni ukuqhubeka kobuthakathaka bemisipha. Umuthi unikezwa ngokufakwa ngemithambo, okusho ukuthi ulethwa ngqo emjondolo wakho nge-vein.

Yini i-Viltolarsen?

I-Viltolarsen iyimithi ye-antisense oligonucleotide eyisigaba esisha semithi enembile. Cabanga ngayo njengomthunywa wama-molecular onikeza imiyalelo ethile kumaseli akho emisipha mayelana nendlela yokwenza amaprotheni.

Umuthi uqondiswe ngqo ezigulini ezinokugula kwe-Duchenne muscular dystrophy ezinokuguquka kwezakhi zofuzo ezingazuza ekweqeni i-exon 53. Le ndlela yezakhi zofuzo isho ukuthi umuthi wenzelwe ukusebenza kuphela kubantu abanoshintsho oluthile lwe-DNA ojenini wabo we-dystrophin.

I-Viltolarsen yathola imvume ye-FDA ngo-2020, okuyenza ibe ngesinye sezithasiselo zakamuva ezinkethweni zokwelashwa kwe-DMD. Umuthi usebenza ezingeni lezakhi zofuzo ukusiza ukubuyisela ukukhiqizwa kwamaprotheni e-dystrophin ezingxenyeni zemisipha.

Isetshenziselwani i-Viltolarsen?

I-Viltolarsen isetshenziselwa kuphela ukwelapha i-Duchenne muscular dystrophy ezigulini ezihlola izakhi zofuzo zazo ziqinisekisa ukuthi zine-mutation yofuzo ye-dystrophin efanelekayo ekweqeni i-exon 53. Lokhu kumelela cishe u-8% wazo zonke iziguli ze-DMD.

I-DMD yisimo esingathi sína esibangelwa izakhi zofuzo esibangela ubuthakathaka bemisipha obuqhubekayo nokonakala. Abafana abanalesi simo bavame ukuqala ukubonisa izimpawu esemncane, ubuthakathaka bemisipha buqala emilenzeni nasethangeni ngaphambi kokuthi busabalale kwamanye amaqembu emisipha.

Umuthi uhlose ukunciphisa ukuqhubeka kobuthakathaka bemisipha futhi usize ukugcina umsebenzi wemisipha isikhathi eside ngangokunokwenzeka. Ngenkathi kungelaphi, i-viltolarsen ingasiza ukugcina ukuhamba nokuzimela ezigulini ezifanelekayo.

Isebenza Kanjani I-Viltolarsen?

I-Viltolarsen isebenza ngokugxila emiyalweni yezakhi zofuzo etshela amaseli emisipha ukuthi enze kanjani iphrotheni ye-dystrophin. Ku-DMD, ukuguqulwa kwezakhi zofuzo kuvimbela amaseli ekwenzeni i-dystrophin esebenzayo, okudingwa yimisipha ukuze ihlale iphilile futhi iqine.

Umuthi usebenzisa inqubo ebizwa ngokuthi i-exon skipping ukusiza amaseli ukuthi adlule esigabeni esinenkinga sezakhi zofuzo. Ngokweqa i-exon 53, amaseli emisipha angakwazi ukukhiqiza inguqulo emfushane kodwa esebenza kancane yephrotheni ye-dystrophin.

Le ndlela ithathwa njenge-therapy eqondiswe ngokuphakathi nendawo kunomuthi oqinile noma obuthakathaka ngomqondo wendabuko. Ukusebenza kwayo kuncike ngokuphelele ekubeni nokuguqulwa kwezakhi zofuzo okulungile, okwenza ukuhlolwa kwezakhi zofuzo kubalulekile ngaphambi kokuqala ukwelashwa.

Ngingayithatha Kanjani I-Viltolarsen?

I-Viltolarsen inikezwa njenge-intravenous infusion, okusho ukuthi ihanjiswa ngqo egazini lakho ngomthambo. Ukufakwa kuvame ukuthatha imizuzu engaba ngu-60 futhi kuphathwa kanye ngesonto endaweni yokunakekelwa kwezempilo.

Akudingeki ukuthi uzile ukudla ngaphambi kokufakwa kwakho, futhi ungadla ngokujwayelekile ezinsukwini zokwelashwa. Ezinye iziguli zikuthola kuwusizo ukuhlala zihambisana kahle ngokuthatha amanzi amaningi ngaphambi nangemva kokufakwa kwazo.

Ithimba lakho lokunakekelwa kwezempilo lizokuqapha ngesikhathi sokufakwa ngakunye ukuze uthole noma yiziphi izimpawu zokungezwani komzimba noma eminye imiphumela emibi. Umthamo ubhalwa ngokucophelela ngokuya ngesisindo somzimba wakho, ngokuvamile ama-80 mg ngekhilogramu.

Hlela ukuchitha cishe amahora angu-2-3 esikhungweni sezempilo ngokuphathwa ngakunye, okuhlanganisa isikhathi sokulungiselela, ukufakwa kwangempela, kanye nokugadwa ngemva kokwelashwa. Iningi leziguli lithuthukisa isimiso esizungeze ama-aphoyintimenti azo masonto onke.

Kufanele Ngiyithathe Isikhathi Esingakanani I-Viltolarsen?

I-Viltolarsen ngokuvamile iyindlela yokwelapha yesikhathi eside ozoqhubeka nayo uma nje inikeza inzuzo futhi itholakala kahle. Akukho usuku lokuphela oluqondile lolu lwemithi.

Udokotela wakho uzohlola njalo ukuthi ukwelashwa kusebenza kahle kangakanani ngokugada ukusebenza kwemisipha yakho, izivivinyo zamandla, kanye nokuhamba konke. Lokhu kuhlola kusiza ukunquma ukuthi ukuqhubeka nokwelashwa kuyazuzisa yini.

Ezinye iziguli zingase zidingeke ukuthi ziphumule ekwelashweni uma ziba nemiphumela emibi noma uma isimo sazo sezempilo sishintsha. Ithimba lakho lezempilo lizosebenza nawe ukuthuthukisa uhlelo olungcono kakhulu lokwelashwa kwesikhathi eside lezidingo zakho ezithile.

Yini Imiphumela Eceleni Ye-Viltolarsen?

Njengayo yonke imithi, i-viltolarsen ingabangela imiphumela emibi, nakuba abantu abaningi beyibekezelela kahle. Imiphumela emibi evame kakhulu ngokuvamile imnene futhi ilawuleka ngaphansi kokuqondiswa okufanele kwezokwelapha.

Nansi imiphumela emibi ongase uyithole, ehlelwe kusukela kwabaningi kuya kwabavamile:

Imiphumela emibi evamile abantu abaningi abayitholayo:

• Ukutheleleka kwepheshana eliphezulu lokuphefumula (izimpawu ezifana nomkhuhlane)
• Ukuphendula kwendawo yokujova (ububomvu, ukuvuvukala, noma ukungakhululeki lapho i-IV ibekwe khona)
• Ukukhwehlela
• Umkhuhlane
• Ikhanda

Imiphumela emibi engavamile kodwa ephawulekayo:

• Ushintsho ekusebenzeni kwezinso (okutholwe ngezivivinyo zegazi)
• Ukuphendula komzimba ngesikhathi sokufakwa
• Isicanucanu noma ukungakhululeki kwesisu
• Ukukhathala noma ukuzizwa ukhathele
• Isiyezi

Imiphumela emibi engavamile kodwa ebucayi edinga ukunakekelwa kwezokwelapha ngokushesha:

• Ukusabela okukhulu komzimba (ubunzima bokuphefumula, ukuvuvukala kobuso noma umphimbo)
• Izinkinga ezinkulu zezinso (izinguquko ekuchameni, ukuvuvukala emilenzeni noma ezinyaweni)
• Ukusabela okukhulu kokufakwa (ubuhlungu besifuba, isiyezi esikhulu, ukushaya kwenhliziyo okusheshayo)

Imiphumela eminingi emibi imnene futhi yesikhashana, kodwa kubalulekile ukubika noma yikuphi ukukhathazeka eqenjini lakho lezempilo. Bangashintsha uhlelo lwakho lokwelapha noma banikeze ukunakekelwa okusekelayo ukusiza ukuphatha noma yikuphi ukungakhululeki.

Ubani Ongafanele Athatha I-Viltolarsen?

I-Viltolarsen ayifanele wonke umuntu, futhi izimo ezithile zezokwelapha noma izimo zingenza lokhu kwelashwa kungafaneleki kuwe. Udokotela wakho uzoqapha ngokucophelela umlando wakho wezokwelapha ngaphambi kokuncoma lo muthi.

Akufanele uthathe i-viltolarsen uma wazi ukuthi unokungezwani komzimba nomuthi noma yiziphi izingxenye zawo. Ngaphezu kwalokho, iziguli ezingenayo uguquko oluthile lofuzo oluvumelana nokweqa i-exon 53 ngeke zizuze kulolu kwelashwa.

Nazi izizathu eziyinhloko zokuthi kungani i-viltolarsen ingase ingakulungeli:

Ukuphikisana okuphelele (akufanele uthathe i-viltolarsen):

• Akukho uguquko lofuzo oluqinisekisiwe oluvumelana nokweqa i-exon 53
• Ukusabela okukhulu komzimba okwaziwayo ku-viltolarsen
• Isifo esibi sezinso esingenza ukuqapha kube nzima

Izimo ezidinga ukuqapha okwengeziwe nokuqapha:

• Izinkinga zezinso ezikhona (ngisho nezimnene)
• Umlando wokungezwani komzimba okukhulu kweminye imithi
• Izifo ezisebenzayo noma amasosha omzimba ancishisiwe
• Ukukhulelwa noma ukuncelisa (ukuphepha akukamiswanga)
• Ezinye izimo zenhliziyo noma zamaphaphu ezingase zibe nzima ukwelashwa

Iqembu lakho lezempilo lizosebenza nawe ukuthola ukuthi i-viltolarsen ingabe iyona ndlela efanele ngokuya ngesimo sakho sezokwelapha ngazinye kanye nezinzuzo ezingaba khona uma kuqhathaniswa nezingozi.

Igama Lomkhiqizo we-Viltolarsen

I-Viltolarsen ithengiswa ngaphansi kwegama lomkhiqizo elithi Viltepso. Leli yigama ozolibona kumalebula kadokotela kanye nemibhalo yezokwelapha.

I-Viltepso ikhiqizwa yi-NS Pharma futhi iyona kuphela uhlobo lwe-viltolarsen olutholakala ngokuthengisa. Okwamanje azikho izinhlobo ezivamile zalo muthi ezitholakalayo.

Uma nixoxa ngokwelashwa kwakho nabahlinzeki bezempilo noma izinkampani zomshuwalense, ungase uzwe womabili la magama esetshenziswa ngokushintshana. Kokubili kubhekisela emuthini ofanayo.

Ezinye izindlela zokwelapha i-Viltolarsen

Eminye imithi eminingi iyatholakala yokwelapha i-Duchenne muscular dystrophy, nakuba ukukhetha okungcono kuncike ekuguqulweni kwakho okuthile kwezakhi zofuzo kanye nezimo zomuntu ngamunye. Ezinye izindlela zokwelapha zisebenza ngendlela ehlukile futhi ziqondise izinguquko ezihlukene ze-genetic.

Eminye imithi yokweqa i-exon ihlanganisa i-eteplirsen (Exondys 51) ezigulini ezithambekele ekweqeni i-exon 51, kanye ne-golodirsen (Vyondys 53) yokweqa i-exon 53. I-Casimersen (Amondys 45) iqondise ukweqa i-exon 45.

Ezinye izindlela zokwelapha ezingeqi i-exon zihlanganisa i-ataluren (Translarna) ezigulini ezinokuguqulwa okungenangqondo, kanye ne-deflazacort noma i-prednisone, okuyizidakamizwa ze-corticosteroid ezingasiza ekunciphiseni ukuguga kwemisipha. Ukwelashwa kwe-gene nge-microdystrophin (Elevidys) kuyatholakala futhi emaqenjini athile obudala.

Udokotela wakho uzocabangela ukuguqulwa kwakho okuthile kwezakhi zofuzo, iminyaka, izimpawu zamanje, nempilo yonke lapho encoma inketho yokwelapha efanele kakhulu isimo sakho.

Ingabe i-Viltolarsen ingcono kune-Golodirsen?

Kokubili i-viltolarsen ne-golodirsen zenzelwe ukwelapha iqembu elifanayo lezakhi zofuzo leziguli ze-DMD ngokweqa i-exon 53, kodwa zinezinto ezibalulekile ezingase zikwenze ukuthi enye ikufaneleke kakhulu kunenye.

I-Viltolarsen inikezwa masonto onke njengokufakwa kwemizuzu engama-60, kanti i-golodirsen idinga ukufakwa kwemizuzu engama-35-60 masonto onke. Zombili le mithi zikhombise ikhono lokwandisa ukukhiqizwa kwe-dystrophin emangqamuzini emisipha, nakuba ukubaluleka komtholampilo kwalolu shintsho kusafundwa.

Ukukhetha phakathi kwale mithi kuvame ukuncika ezintweni ezinjengempendulo yakho emithini, iphrofayili yemiphumela emibi, ukutholakala komshwalense, kanye nolwazi lweqembu lakho lezempilo ngemithi ngayinye. Ezinye iziguli zingazama eyodwa bese zishintshela kwenye ngokusekelwe ekuphenduleni kwazo.

Udokotela wakho uzocabangela umlando wakho wezokwelapha, izici zokuphila, kanye nemigomo yokwelashwa lapho ekusiza ukuthi unqume ukuthi iyiphi imithi engaba yindlela engcono kakhulu yesimo sakho.

Imibuzo Evame Ukubuzwa Mayelana ne-Viltolarsen

Ingabe i-Viltolarsen iphephile Ezinkingeni Zenhliziyo?

I-Viltolarsen ngokuvamile ingasetshenziswa ezigulini ezinzima ngezinkinga zenhliziyo, kodwa lokhu kudinga ukuqapha okucophelelayo nokuxhumana neqembu lakho le-cardiology. Njengoba i-DMD ivame ukuthinta imisipha yenhliziyo, iziguli eziningi zinezinkinga zenhliziyo.

Udokotela wakho uzohlola ukusebenza kwenhliziyo yakho ngaphambi kokuqala ukwelashwa futhi akuqaphe njalo ngesikhathi sokwelashwa. Umuthi ngokwawo awaziwa ukuthi uqhubeka ngokuqondile izinkinga zenhliziyo, kodwa inqubo yokufakwa kanye nanoma yiziphi izimpawu zokungezwani komzimba okungenzeka zidinga ukuphathwa ngokucophelela ezigulini ezinemibandela yenhliziyo.

Uma unezinkinga zenhliziyo, ithimba lakho lezempilo lingathatha izinyathelo zokuphepha ezengeziwe ngesikhathi sokufakwa, njengokuqapha izinga lokushaya kwenhliziyo yakho nomfutho wegazi ngokusondele noma ukulungisa izinga lokufakwa.

Ngingenzani Uma Ngiphuthelwa Ngengozi Umthamo we-Viltolarsen?

Uma uphuthelwa ukufakwa kwakho kwe-viltolarsen okuhlelelwe masonto onke, xhumana nomhlinzeki wakho wezempilo ngokushesha ngangokunokwenzeka ukuze uhlele kabusha. Ungazami ukwenza umthamo ophuthelwe ngokuthatha umthamo ophindwe kabili noma ukushintsha isimiso sakho ngokwakho.

Ngokuvamile, kufanele uthole umthamo wakho owuphuthelwe ngokushesha okukhulu, bese uqhubeka neshejuli yakho yamasonto onke ejwayelekile. Isikhathi esiqondile sincike ekutheni sekudlule isikhathi esingakanani ngemva komthamo wakho owuphuthelwe kanye nohlelo lwakho lokwelashwa olujwayelekile.

Ukuphuthelwa imithamo ngezikhathi ezithile ngokuvamile akuyona ingozi, kodwa ukuqina kubalulekile ekutholeni imiphumela engcono kakhulu evela ekwelashweni kwakho. Ithimba lakho lokunakekelwa kwezempilo lingakusiza ukuthi uthuthukise amasu okugwema ukuphuthelwa ama-aphoyintimenti esikhathi esizayo.

Kufanele Ngenzeni Uma Nginokuphendula komzimba ngesikhathi sokufakwa kwe-Viltolarsen?

Uma uhlangabezana nezimpawu zokuphendula komzimba ngesikhathi sokufakwa kwakho kwe-viltolarsen, yazisa ithimba lakho lokunakekelwa kwezempilo ngokushesha. Baqeqeshwe ukubona nokwelapha ukusabela kokufakwa ngokushesha nangokuphepha.

Izimpawu ezivamile zokuphendula komzimba zihlanganisa ukuqubuka kwesikhumba, ukuluma, ubunzima bokuphefumula, ukuvuvukala kobuso noma umphimbo, ukuqina kwesifuba, noma isiyezi esikhulu. Ithimba lakho lokunakekelwa kwezempilo lizoyeka ukufakwa futhi linikeze ukwelashwa okufanele, okungase kuhlanganise ama-antihistamines, ama-steroids, noma eminye imithi.

Ukusabela okuningi kokufakwa kulula futhi kungalawulwa ngokunciphisa izinga lokufakwa noma ngokunikeza imithi ngaphambi kokwelashwa okuzayo. Ukusabela okukhulu akuvamile kodwa kudinga ukunakekelwa kwezempilo ngokushesha.

Ngingayeka nini ukuthatha i-Viltolarsen?

Isinqumo sokuyeka i-viltolarsen kufanele senziwe ngaso sonke isikhathi ngokubonisana nethimba lakho lokunakekelwa kwezempilo futhi sisekelwe ezintweni eziningana ezihlanganisa ukusebenza kokwelashwa, imiphumela emibi, kanye nesimo sakho sempilo esijwayelekile.

Ungase ucabange ukuyeka uma uhlangabezana nemiphumela emibi engathuthuki ngamasu okuphatha, uma imithi iyeka ukunikeza inzuzo, noma uma isimo sakho sezokwelapha sishintsha kakhulu. Ezinye iziguli zingase zidinge ukuphumula okwesikhashana kunokuyeka ukwelashwa unomphela.

Ungayeki ukuthatha i-viltolarsen ngokuzumayo ngaphandle kokuxoxa ngayo nodokotela wakho kuqala. Bangakusiza ukuthi uqonde imiphumela engaba khona yokuyeka ukwelashwa futhi bahlole ezinye izindlela uma kudingeka.

Ngingahamba nini ngithatha i-Viltolarsen?

Yebo, ungahamba ngenkathi uthatha i-viltolarsen, kodwa lokhu kudinga ukuhlela kusengaphambili nokuxhumana nethimba lakho lezempilo. Njengoba udinga ukufakwa kwamasonto onke, kuzodingeka ukuthi uhlele ukwelashwa lapho uya khona noma ulungise uhlelo lwakho lokuhamba ngokuya ngamaphuzu akho okufakwa.

Ohambweni olufushane, ungahle ukwazi ukuhlela ukufakwa kwakho ngaphambi noma ngemuva kancane ukuze kulungelane nezinsuku zakho zokuhamba. Ohambweni olude, udokotela wakho angakusiza ukuthi uthole izikhungo zezempilo ezifanele lapho uya khona ezingahlinzeka ngemithi yakho.

Njalo thwala incwadi evela kudokotela wakho echaza isimo sakho sezempilo nezidingo zokwelashwa lapho uhamba, ikakhulukazi uma uhamba phesheya noma udinga ukuthwala noma yiziphi izinto zokwelapha.