rituximab salvage therapy in adults with immune thrombocytopenia

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Rituximab S alvage Thera py in Adults With Immune Thrombocytopenia: Retrospective Study on Efficacy and Safety Profiles Emilie Reboursiere !" #ou$ues %" &aigne !" 'ohnson S" (hantepie A" (" %ac )" Reman &" &acro *" +enabed ," Tro ussard %" -ama. S" (he/e International 'ournal !ematology  -)I 01"01123s040567108709947 Pembimbing dr. Anshar Sp.OG (K) dr " Ronald !uta galang

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Page 1: Rituximab Salvage Therapy in Adults With Immune Thrombocytopenia

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Rituximab Salvage Therapy in Adults With

Immune Thrombocytopenia: RetrospectiveStudy on Efficacy and Safety Profiles

Emilie Reboursiere !" #ou$ues %" &aigne !" 'ohnson S" (hantepie A" (" %ac )" Reman &"

&acro *" +enabed ," Troussard %" -ama. S" (he/e

International 'ournal !ematology -)I 01"01123s040567108709947

Pembimbingdr. Anshar Sp.OG (K)

dr" Ronald !utagalang

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ITP adalah gangguan autoimun yang ditandai dengan jumlah trombosit <100 × 109/L dengan risikoperdarahan. Trombosit < 0 × 109/L dan/atau ketika

ada tanda perdarahan adalah indikasi pengobatan.

  International Journal Hematology 

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Terapi lini pertama adalah kortikosteroid! " I#I$

 respon lengkap arang! dan hanya "#$%#&pasien men'apai respon tahan lama.

  International Journal Hematology 

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 %meri&an 'o&iety o( )ematology dan di Peran&isPengobatan yang tidak responsi( atau kambuh setelahterapi kortikosteroid " I#I$ adalah splenektomi 

angka kesembuhan *0+.

  International Journal Hematology 

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erdapat komorbiditas penting dengankomplikasi tromboemboli dan risiko ineksi(tingkat rasio "* lipat).

  International Journal Hematology 

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 Agonis ritu*imab! thrombopoietin$reseptor!dana+ol! dapson! dan a+athioprine adalahpilihan terapi lini kedua daripada splenektomi.

  International Journal Hematology 

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$udbrandsdottir '! %rnold ,-! $hanima ! %uger 'ituimab adalah antibodi anti2,30 monoklonal! yangdigunakan untuk pengobatan beberapa gangguan

autoimun dengan hasil yang menggembirakan.

  International Journal Hematology 

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ituimab dapat menjadi alternati( untuk splenektomi.4amun! hal ini masih kontro5ersial karena hasil jangkapanjang dan kemanjurannya perlu ditunjukkan oleh

penelitian lain.

International Journal Hematology 

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-enilai e(isiensi dan toleransi penggunaan ituimabse&ara retrospeksti( terhadap 6 kasus re(rakter/relapsITP yang diobati dari tahun 3007301.

Tujuan Penelitian

  International Journal Hematology 

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Penelitian ini adalah penelitian retrospekti( dari semuapasien re(rakter atau kambuh diobati dengan rituimabdari 8anuari 3007 sampai %gustus 301.

Desain Penelitian

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-ereka semua menerima rituimab pada dosis 6mg/m3 mingguan! selama 7 minggu berturutturut.

Desain Penelitian

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:

 pasien dengan jumlah trombosit lebih dari 0×109/L dan setidaknya 3 lipat peningkatan baselinetanpa perdarahan.

Desain Penelitian

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2

 jumlah trombosit lebih dari 100×109/L dan tidakadanya perdarahan.

Desain Penelitian

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;ambuh dianggap sebagai hilangnya 2! trombosit di baah 100×109/L atau hilangnya respon! trombosit di baah 0×109/L atau kurang dari 3 lipat peningkatan

 baseline trombosit atau perdarahan

Desain Penelitian

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espon akhir dianggap pada bulan! 1! 3! dan 6 tahunsetelah in(us rituimab pertama. ,urasi respon diukurdari pen&apaian menanggapi kambuh. espon tahan

lama adalah dor lebih dari 1 tahun.

Desain Penelitian

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Toksisitas rituimab tidak die5aluasi segera tetapiselama (olloup =Tingkat protein serum! jumlah

neutro(il! dan in(eksi klinis atau data keganasan pada 1!3! dan 6 tahun setelah in(us rituimab pertama>.

Desain Penelitian

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?ji @isher untuk membandingkan distribusi. %nalisis (aktor predikti( potensial dilakukan dengan

menggunakan regresi logistik! dan hasilnya dinyatakansebagai rasio odds dan inter5al keper&ayaan 96+.

Analisa Penelitian

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6 pasien diobati dengan rituimab dari 8an 3007%gust 301 63+ adalah perempuan. ?sia rataratapada saat terapi rituimab adalah 7* tahun =17A0>.8umlah trombosit median sebelum rituimab adalah

!6×109/L =160>.

Hasil Peneletian

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Terapi lini pertama kortikosteroid =n B 6>! dan kadangkadang " I#Ig =n B 16>. 1A pasien =*1+> menerima

peraatan lain sebelum dan 1 =79+> setelah rituimab.Lini pengobatan lain yang terlibat TP:reseptor agonis

=TP:a>! splenektomi! aCathioprine! disulone!

siklo(os(amid! dan danaCol.

Hasil Peneletian

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Tiga bulan setelah in(us pertama! *0+ =31/6> daripasien men&apai :! termasuk 17+ =6/6> di 2. :

dan tingkat 2 yang masingmasing 7+ =1*/7> dan37+ =A/7> pada 1 tahun! A+ =1*/3> dan 36+ =A/3>pada 3 tahun! dan 3+ = 1/0> dan 3+ =/1> pada 6

tahun.

Hasil Peneletian

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10 dari 6 pasien =39+> menjalani splenektomi! 7 darimereka sebelum rituimab di antaranya satu denganrespon parsial yang berlangsung 31 bulan =pasien 1>

Hasil Peneletian

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Terapi rituimab berada di lini ke3 untuk 7+ =n B 13>!ke untuk 70+ =n B 17>! ke7 untuk 30+ =n B >! ke6untuk *+ =n B 3> =Tabel 3>. espon tahan lama =D13 bulan> setelah rituimab diamati pada A+ pasiendalam terapi lini kedua =10/13> terhadap 6+ dari

pasien di lini ke atau lebih =3/0A> Ep B 0!01 F rasioodds A!7 =1!AF 101!0> 96+G.

Hasil Peneletian

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Tidak ada perbedaan yang ditemukan antara : padapasien yang lebih muda =<*0 tahun! 1/36 pasien> dan

pada pasien usia lanjut =D atau B *0 tahun! 6/10> =p B 1>

Hasil Peneletian

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 %uger et al. =3011> melakukan metaanalisis studi padarituimab dengan *A nonsplene&tomised pasien ITPkronis. The : dan 2 pada 1 tahun adalah 6 dan

70+! masingmasing! dengan median tindak lanjut dari9 bulan

Diskusi

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-oulis et al. dalam analisis retrospekti( dari 106 pasiendibandingkan di lini kedua splenektomi dan rituimab

dengan : yang lebih baik untuk kelompoksplenektomi =A!9 5s 69+! masingmasing! p B 0!001>.

Diskusi

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 ituimab dapat dianggap sebagai alternati( untuksplenektomi! karena 7+ dari pasien men&apai :

setelah lebih dari 1 tahun dan 3+ pada 6 tahun (olloup. 'elain itu! pro(il keamanannya harus membaa kitauntuk memilih ini terapi pilihan medis sebelum operasi

Kesimpulan

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THI-% ;%'I)