Fedratinib (Systemic)
Jeneng merek: Inrebic
Kelas obat:
Agen Antineoplastik
Panganggone Fedratinib (Systemic)
Myelofibrosis
Pengobatan myelofibrosis menengah-2 utawa beresiko dhuwur, kalebu myelofibrosis primer, post-polycythemia vera myelofibrosis, lan post-essential thrombocythemia myelofibrosis (ditunjuk minangka obat yatim piatu dening FDA kanggo kondisi kasebut). Sacara substansial nyuda splenomegali lan beban gejala dibandhingake karo plasebo.
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Carane nggunakake Fedratinib (Systemic)
Umum
Skrining Pretreatment
Monitor Pasien
Premedikasi lan Profilaksis
Dispensing and Administration Precaution
Pertimbangan Umum Liyane
Administrasi
Administrasi Oral
Atur sapisan dina tanpa preduli saka panganan; tolerability (yaiku, nyuda mual utawa mutahke) tambah karo dhaharan dhuwur lemak.
Dosis
Kasedhiya minangka fedratinib hidroklorida; dosis ditulis ing syarat-syarat fedratinib.
Dewasa
Myelofibrosis Oral400 mg sapisan dina ing wong kanthi jumlah trombosit awal ≥50.000/mm3.
Aja miwiti yen jumlah trombosit awal <50.000/mm3.
Yen nggunakake bebarengan karo CYP3A4 kuat inhibitor ora bisa nyingkiri, nyetel dosis fedratinib.
Modifikasi Dosis kanggo Toksisitas OralEfek sing ora becik bisa mbutuhake gangguan sementara, nyuda dosis, lan / utawa mandheg permanen.
Yen perlu nyuda dosis saka 400 mg sapisan dina, nyuda dosis dadi 300 mg sapisan dina.
Yen perlu ngurangi dosis saka 300 mg sapisan dina, ngurangi dosis dadi 200 mg sapisan dina.
Yen perlu ngurangi dosis maneh, mandhegake fedratinib.
Toksisitas Hematologis OralYen trombositopenia kelas 3 kanthi pendarahan aktif utawa trombositopenia kelas 4, interupsi terapi fedratinib. Yen thrombocytopenia mutusake kanggo kelas 2 utawa kurang utawa awal, nerusake fedratinib ing dosis ngisor sabanjure.
Yen Neutropenia kelas 4 dumadi, interupsi terapi fedratinib. Yen neutropenia mutusake kanggo grade 2 utawa kurang utawa awal, nerusake fedratinib ing dosis ngisor sabanjure.
Ing pasien sing gumantung karo transfusi, coba ngurangi dosis.
Efek GI OralYen mual, muntah, utawa diare kelas 3 utawa luwih lan ora responsif kanggo terapi dhukungan sajrone 48 jam, interupsi terapi fedratinib. Nalika keracunan mutusake kanggo tingkat 1 utawa kurang utawa awal, nerusake fedratinib ing dosis ngisor sabanjure.
Keracunan Hepatik LisanKanggo tingkat 3 utawa luwih ALT, AST, utawa bilirubin munggah pangkat, interrupt therapy fedratinib. Yen keracunan mutusake kanggo tingkat 1 utawa kurang utawa awal, nerusake fedratinib ing dosis ngisor sabanjure lan ngawasi konsentrasi ALT, AST, lan total lan langsung bilirubin serum luwih kerep.
Yen kelas 3 utawa luwih ALT, AST, utawa Konsentrasi bilirubin mundhak maneh, mandhegake terapi fedratinib.
Wernicke Encephalopathy OralYen dicurigai ensefalopati Wernicke, langsung mandhegake fedratinib lan menehi tiamin IV. Ngawasi tingkat tiamin nganti gejala ilang utawa nambah lan tingkat tiamin tekan wates normal.
Peningkatan Enzim Pankreas OralKanggo tingkat 3 utawa luwih gedhe konsentrasi amilase lan/utawa lipase serum, interupsi terapi fedratinib. Yen keracunan mutusake kanggo tingkat 1 utawa kurang utawa awal, nerusake fedratinib ing dosis ngisor sabanjuré. Yen keracunan mutusake kanggo tingkat 1 utawa kurang utawa awal, nerusake fedratinib ing dosis ngisor sabanjure.
Watesan Resep
Dewasa
Myelofibrosis OralDosis <200 mg sapisan dina ora dianjurake.
Populasi Khusus
Gangguan Hepatik
Gagal ati sing abot (konsentrasi bilirubin total >3 kaping ULN karo AST apa wae): Aja nggunakake.
Gagal ati entheng (konsentrasi bilirubin total ora ngluwihi ULN kanthi konsentrasi AST ngluwihi ULN, utawa konsentrasi bilirubin total >1 kali ULN, nanging ora >1,5 kali ULN, kanthi konsentrasi AST): Ora ana rekomendasi dosis khusus ing wektu iki.
Sedheng (konsentrasi bilirubin total >1,5 kaping ULN, nanging ora >3 kaping ULN, kanthi konsentrasi AST apa wae): Ora ana rekomendasi dosis khusus ing wektu iki.
Gagal ginjal
Gagal ginjel abot (Clcr 15–29 mL/menit): Ngurangi dosis dadi 200 mg sapisan dina.
Gagal ginjel moderat (Clcr 60–89 mL/menit): Ora perlu pangaturan dosis awal. Ngawasi kanthi rapet tandha-tandha keracunan lan atur dosis sing cocog.
Gangguan ginjel entheng (Clcr 30–59 mL/menit): Ora ana pangaturan dosis sing dibutuhake.
Pasien Geriatrik
Saiki ora ana rekomendasi dosis khusus.
Pènget
Kontraindikasi
Pènget/PanandhapPènget
Encephalopathy
Serius, kadhangkala fatal, ensefalopati kacarita. Wernicke encephalopathy, darurat neurologis sing disebabake kekurangan thiamine, uga dilapurake.
Yen owah-owahan status mental, kebingungan, utawa gangguan memori kedadeyan, interupsi terapi fedratinib lan evaluasi kanthi cepet kanggo encephalopathy (yaiku, pemeriksaan neurologis, pencitraan radiografik. , penilaian kadar tiamin). Yen dicurigai encephalopathy, langsung mandhegake fedratinib lan menehi tiamin IV. Ngawasi tingkat tiamin nganti gejala ilang utawa nambah lan tingkat tiamin tekan wates normal.
Tinjau tingkat tiamin lan status nutrisi sadurunge miwiti terapi, sacara periodik sajrone terapi, lan kaya sing dituduhake sacara klinis. Aja miwiti terapi fedratinib ing pasien kanthi kekurangan thiamine. Mbenerake tingkat tiamin sadurunge miwiti lan sajrone terapi.
Pènget lan Pancegahan Liyane
Efek HematologisEfek hematologis sing ora becik (yaiku anemia, trombositopenia, neutropenia). Wektu rata-rata kanggo wiwitan anemia kelas 3 utawa trombositopenia kira-kira 2 utawa 1 sasi. Konsentrasi hemoglobin nadir kedadeyan sawise 12-16 minggu terapi fedratinib; Recovery sebagean lan stabil ana sawise 16 minggu. Kira-kira setengah saka pasien sing ngalami anemia mbutuhake transfusi RBC lan 3,1% pasien sing ngalami thrombocytopenia mbutuhake transfusi trombosit.
Monitor CBC ing awal, sacara periodik sajrone terapi, banjur kaya sing dituduhake sacara klinis. Interupsi sementara terapi, nyuda dosis, utawa mandheg perawatan bisa uga dibutuhake adhedhasar keruwetan keracunan.
Efek GIDiare, mual, lan muntah kerep kedadeyan, umume sajrone 2 minggu miwiti terapi.
Coba terapi antiemetik profilaksis (contone, antagonis reseptor serotonin 5-HT3). Yen diare kedadeyan, enggal miwiti terapi antidiare nalika wiwitan diare.
Interupsi sauntara terapi, nyuda dosis, utawa mungkasi perawatan bisa uga dibutuhake adhedhasar keruwetan keracunan. Ngawasi tingkat tiamin lan bener yen perlu.
Toksisitas HepatikSerum ALT lan/utawa AST munggah pangkat, umume ing 3 sasi miwiti terapi, dilaporake.
Monitor tes fungsi ati ing awal, kanthi periodik sajrone terapi, lan kaya sing dituduhake sacara klinis. Interupsi sauntara sing diterusake kanthi nyuda dosis utawa mandheg perawatan bisa uga dibutuhake adhedhasar keruwetan keracunan.
Peningkatan Enzim PankreasSerum amilase lan/utawa peningkatan lipase, umume sajrone 1 wulan wiwitan terapi, dilaporake. Pankreatitis uga dilapurake.
Monitor konsentrasi serum amilase lan lipase ing awal, sacara periodik sajrone terapi, lan kaya sing dituduhake sacara klinis. Interupsi sauntara sing diterusake kanthi nyuda dosis utawa mandheg perawatan bisa uga dibutuhake adhedhasar keruwetan keracunan.
Mayor Adverse Cardiac Events (MACE)Risiko tambah MACE sing diamati ing pasien arthritis rheumatoid sing diobati karo inhibitor Janus Kinase liyane. Nasehati pasien babagan keuntungan lan risiko kanggo miwiti utawa nerusake fedratinib, utamane kanggo perokok saiki utawa kepungkur utawa sing duwe faktor risiko kardiovaskular liyane. Ngandhani pasien babagan gejala penyakit kardiovaskular sing serius lan langkah-langkah sing kudu ditindakake yen gejala kasebut kedadeyan.
TrombosisRisiko trombosis sing tambah diamati ing pasien arthritis rheumatoid sing diobati karo inhibitor Janus Kinase liyane. Evaluasi pasien kanthi gejala trombosis kanthi cepet lan nambani kanthi tepat.
Keganasan SekunderRisiko tambah limfoma lan ganas liyane, ora kalebu kanker kulit nOnmelanoma, sing diamati ing pasien arthritis rheumatoid sing diobati karo inhibitor Janus Kinase liyane. Perokok saiki utawa sing kepungkur duwe risiko tambah kanggo pangembangan keganasan sekunder. Wenehi pitutur marang pasien babagan keuntungan lan risiko kanggo miwiti utawa nerusake fedratinib, utamane kanggo wong-wong sing duwe ganas sing dikenal (saliyane kanker kulit nonmelanoma), sing ngalami ganas, lan wong-wong sing ngrokok saiki utawa sing kepungkur.
Populasi Tertentu
KandhutanBisa nyebabake cilaka janin; teratogenisitas dituduhake ing kewan.
Pertimbangake potensial risiko lan mupangat obat kanggo ibu lan risiko potensial kanggo janin sadurunge miwiti terapi ing wanita ngandhut.
LaktasiOra dingerteni manawa fedratinib utawa metabolit kasebut disebarake menyang susu manungsa utawa mengaruhi bayi sing nyusoni utawa produksi susu. Mungkasi nyusoni sajrone terapi lan nganti ≥1 sasi sawise mandhegake obat kasebut.
Panggunaan PediatrikKeamanan lan khasiat durung ditetepake.
Panggunaan GeriatrikOra ana beda sakabèhé ing safety utawa khasiat relatif marang wong diwasa sing luwih enom .
Gangguan HepatikFarmakokinetik fedratinib ora diowahi ing pasien kanthi entheng (konsentrasi bilirubin total ora ngluwihi ULN kanthi konsentrasi AST ngluwihi ULN, utawa konsentrasi bilirubin total >1 kali ULN, nanging ora >1,5 kali ULN, kanthi sembarang Konsentrasi AST) utawa moderat (konsentrasi bilirubin total > 1,5 kali ULN, nanging ora > 3 kali ULN, kanthi konsentrasi AST apa wae) gangguan hepatik.
Efek gangguan hepatik abot (konsentrasi bilirubin total >3 kali ULN karo konsentrasi AST) ing farmakokinetik ora ditetepake. Aja nggunakake ing pasien kanthi gangguan hepatik sing abot.
Gagal GinjalFarmakokinetik fedratinib ora owah ing pasien kanthi gangguan ginjel entheng (Clcr 60-89 mL/menit).
Peningkatan paparan sistemik ing individu kanthi gangguan ginjel moderat utawa abot (Clcr 15-59 mL / menit). Ngurangi dosis ing pasien kanthi gangguan ginjel abot sing wis ana sadurunge.
Efek saru kelas 3 utawa 4 sing mbutuhake modifikasi dosis dilapurake luwih kerep ing pasien kanthi gangguan ginjel moderat; ngawasi kanthi rapet pasien kanthi gangguan ginjel moderat sing wis ana sadurunge kanggo tandha-tandha keracunan fedratinib lan atur dosis sing cocog.
Efek Sabar sing Umum
Efek sing ora bisa dilapurake ing ≥20% pasien: Diare, mual, anemia, muntah.
Apa obatan liyane bakal mengaruhi Fedratinib (Systemic)
Metabolisme utamane dening CYP3A4 lan, kanthi luwih sithik, dening CYP2C19 lan monooxygenase 3 (FMO3) sing ngemot flavin.
In vitro, nyegah P-glikoprotein (P-gp), protein tahan kanker payudara (BCRP), protein transport anion organik (OATP) 1B1, OATP1B3, transporter kation organik (OCT) 2, multidrug lan racun. ekstrusi (MATE) transporter 1, lan MATE2K; dudu inhibitor pompa ekspor garam empedu (BSEP), multidrug resistance protein (MRP) 2, transporter anion organik (OAT) 1, lan OAT3.
Substrat P-gp, nanging dudu substrat BCRP , BSEP, OATP1B1, OATP1B3, MRP, utawa MRP2.
Obat sing Ngaruhi Enzim Mikrosomal Hepatik
Inhibitor CYP3A4 sing kuat: Kemungkinan tambah paparan sistemik, lan tambah keracunan, fedratinib. Coba obat alternatif kanthi potensial inhibisi CYP3A4 kurang. Yen panggunaan serentak saka inhibitor CYP3A4 sing kuat ora bisa dihindari, nyuda dosis fedratinib dadi 200 mg sapisan dina. Yen inhibitor CYP3A4 sing kuat dihentikan, tambah dosis fedratinib dadi 300 mg sapisan dina suwene 2 minggu, banjur tambah nganti 400 mg sapisan dina, kaya sing ditoleransi. tambah paparan sistemik kanggo fedratinib lan kemungkinan keracunan. Bisa uga mbutuhake pemantauan safety sing luwih intensif lan modifikasi dosis potensial yen ana reaksi salabetipun.
Inducer CYP3A4 sing moderat lan kuat: Panggunaan bebarengan bisa nyebabake nyuda paparan sistemik kanggo fedratinib lan bisa nyuda efektifitas obat kasebut. Aja nggunakake bebarengan.
Obat sing dimetabolisme dening Enzim Mikrosomal Hepatik
Substrat saka CYP3A4, 2C19, utawa 2D6: Kemungkinan tambah paparan sistemik, lan tambah keracunan, obat substrat. Yen fedratinib digunakake bebarengan karo substrat CYP3A4, 2C19, utawa 2D6, monitor keracunan obat substrat lan atur dosis obat substrat sing cocog.
Substrat saka OCT2 lan MATE1/2-K: Kemungkinan reresik ginjel dikurangi. saka obat substrat. Yen fedratinib digunakake bebarengan karo substrat OCT2 utawa MATE1/2-K, monitor kanggo reaksi salabetipun lan nimbang modifikasi dosis.
Obat Spesifik
Obat
Interaksi
Komentar
Diltiazem
Ora ana efek sing signifikan marang fedratinib AUC
Efavirenz
AUC fedratinib mudhun (47%)
p>Bisa nyebabake nyuda cahya lan bisa nyuda efektifitas fedratinib. Aja nggunakake bebarengan.
Erythromycin
Ora ana efek sing signifikan ing fedratinib AUC
Fluconazole
Tambah fedratinib AUC ing kahanan ajeg
Panganggone bebarengan bisa nyebabake tambah paparan sistemik lan bisa dadi keracunan. Bisa uga mbutuhake pemantauan keamanan sing luwih intensif lan modifikasi dosis potensial yen ana reaksi sing ora becik.
Ketoconazole
Tambah fedratinib AUC (2 kali lipat ing kahanan ajeg)
Pertimbangake. obat alternatif kanthi potensial inhibisi CYP3A4 kurang; Yen panggunaan bebarengan ora bisa dihindari, nyuda dosis fedratinib dadi 200 mg sapisan dina
Yen ketokonazol dilereni, tambah dosis fedratinib dadi 300 mg sapisan dina suwene 2 minggu banjur ditambah dadi 400 mg sapisan dina, kaya sing ditoleransi.
Metformin
Reresik ginjel saka metformin suda 36%
Monitor reaksi salabetipun lan nimbang modifikasi dosis.
Metoprolol
Tambah metoprolol AUC (2 kali lipat)
Monitor toksisitas metoprolol lan atur dosis metoprolol sing cocog
Midazolam
Tambah midazolam AUC (4 kali lipat)
Monitor toksisitas midazolam lan atur midazolam dosis sing cocog
Tambah AUC omeprazole (3 kali lipat)
Monitor keracunan omeprazole lan atur dosis omeprazole sing cocog
Ora ana efek substansial ing fedratinib AUC
Rifampisin
Penurunan AUC fedratinib (saka 81%)
Bisa nyebabake nyuda paparan sistemik lan bisa nyuda efektifitas fedratinib. Aja nggunakake bebarengan.
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