rhepo生物相似藥品申請上市之臨床試驗分析 - cde

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RegMed 2015 Vol. 62 1 rhEPO生物相似藥品申請上市之臨床試驗分析 陳筱筠/詹明曉 1 前言 隨著生物科技及製藥技術的進步,發展生物相似性藥品已成國際趨勢。我國衛生署 (現衛生福利部)2008 年參考歐洲藥物管理局(European Medicine Agency, EMA)的相關 基準,訂定了第一版的「藥品查驗登記審查準則-生物相似性藥品之查驗登記」,於 2015 6 12 日公告「生物相似性藥品查驗登記基準」最新修正版本。 重組人類紅血球生成素(rhEPO)目前已被廣為發展成生物相似性藥品。由於 Epoetin alfa 在歐洲的專利於 2004 年到期,許多生技廠商相繼投入此生物相似性藥品的研發。現 今已有許多 Epoetin alfa 生物相似藥被核准上市。在歐洲有兩個,日本有一個,在南韓、 中國、南美、非洲、泰國及其他亞洲國家,更有多個生物相似產品上市。美國因為專利 因素,目前尚未有重組人類紅血球生成素相似性藥品上市,但隨著 2014 年在美國的專 利到期,有一些產品已向美國食品藥物管理局(US Food and Drug Administration, FDA) 提出申請,準備搶佔美國市場。我國目前尚未有重組人類紅血球生成素相似性藥品核准 上市,但已有多家生技公司正在研發中。 關於重組人類紅血球生成素生物相似性藥品的上市之臨床前及臨床要求,請參考 生物相似性藥品查驗登記基準」 [1] (2015 06 12 日修正)附錄一「特定生物相似性 藥品之產品基準之第肆章節重組人類紅血球生成素」。本文將著重於臨床部分的討 論,就目前於歐洲及日本已取得許可證之重組人類紅血球生成素生物相似性藥品,分析 其在上市前所執行的臨床試驗,歸納整理法規單位對於生物相似性藥品的審查邏輯,提 供日後類似產品研發的參考。建議先行閱讀上述基準,再配合本文的範例,較易有完整 的概念。 背景 人類紅血球生成素含有 165 個胺基酸,是由腎臟製造的醣蛋白,具刺激紅血球生成 功能。臨床上使用之重組人類紅血球生成素,是利用 DNA 重組技術,經哺乳動物細胞 1 財團法人醫藥品查驗中心新藥科技組

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rhEPO
/1

6 12
(rhEPO) Epoetin
Epoetin alfa

2014
(US Food and Drug Administration, FDA)


DNA
1





Eprex® 3


1 st Generation
Eprex® Epoetin alfa
Recormon® Epoetin beta


RegMed 2015 Vol. 62 3
(Pharmaceutical and Medical Devices Agency, PMDA)
Teruyo Arato 2011 [4]

Substance) Brand Name Company
2 Hospira/Stada 12/18/2007
[JCR]
2. Retacrit
Duration
Route/
HX 575 (EU)
period (wk 25~28)
response* during wk
( Erypo® group as
interval validity only)
Duration
Route/
SB 309 (EU)
1. Mean weekly
The 95% CI
45 IU/kg/wk)
dose /kg during DB
period
dosage ±14 IU/kg/wk
2. Hb ± 0.6g/dl
04-46 safety trial
with historical data
04-14 safety trial
evaluation period
on HD/n=143
DB: double blind; RD: randomized; MC: multicenter; wk: week; CRF: chronic renal failure
HDHemodialysisIVIntravenous injectionSCSubcutaneous injection
* Hb response was defined as an increase in Hb concentration of 2g/dl from the mean value from the screen/baseline period in the
absence of RBC transfusion during the preceding 4 weeks
# 30%The assumed placebo rate (10%) plus half the difference between active treatment and placebo (20%)
HX-575 (Epoetinalfahexal ® / Binocrit
Novartis AG Hexal Epoetin alfa

/(Pharmacokinetic/Pharmacodynamics, PK/PD)
() /(PK/PD)
Eprex ®(PD effect)
(reticulocyte count)
97%~103%
Study N Route Reference Study Design
INJ-4 6 SC/IV Eprex® /Erypo ® Single dose; pilot study
INJ-5 76 IV Eprex® / Erypo ® Multiple dose (100ug/kg t.i.w. for 4wk);
pivotal study
INJ-6 72 SC Neorecormon® Multiple dose (100ug/kg t.i.w. for 4wk);
characterization of PK
4wk);supportive data for PK
INJ-12 74 SC Eprex® / Erypo ® Multiple dose (100ug/kg t.i.w. for 4wk);
Pivotal study requested by the CHMP
SC IV; t.i.w 3
()
(INJ-9)
Erypo ® 10~13 g/dl 2:1
Erypo ®
( 1~24 )( 25~28 )
Erypo ®(
RegMed 2015 Vol. 62 6
±0.5 g/dl) PP Population ITT Population
ITT Population ± 0.5 g/dl
Epoetin (Change in Epoetin Dose)
56
Primary Endpoint: Mean Absolute Change in Hb (PP Population)
HX575 (n=207) Erypo® (n=118)
Least square means (g/dl) 0.147 ± 0.092 0.063 ± 0.117
Difference 0.084, 95% CI [-0.170; 0.338]
Within Predefined Margin [-0.5; +0.5]
INJ-11 12 91 2:1
Erypo ®
Erypo ®(Internal Validity)
HX575 5-12
≥ 2.0 g/dl
4 HX575 30% (
10%20%)
HX575 61.7%
(37/60)95% 30% ()Erypo®
44.1%
Primary Endpoint: Response Rate
Anti-Epoetin Antibody 4-8
RegMed 2015 Vol. 62 7
6
(
[ 1] 2
(Erypo® /Eprex® )
Eprex® / Erypo ® /

)(
(PRCA)
1) INJ13
2) INJ14
3) INJ17
6
1 Eprex® 2002
2006 coated rubber stopper
(additional pharmacovigilance measure)
85% Epoetin alpha
Biosimilar (:EMA
11/3/2015)
IV
IV
Autologous Predonation
Orthopaedic Surgery SC SC SC*
SCIV # EMA Epoetinalfa HEXAL “ # ”

( 07-08)
(NCT01693029) Procrit ® 2015 3
(week -4~day 1)( 21~28 )

/Silapo
) Epoetin zeta Epoetin alfa
Hospiral Inc.STADA BIOCEUTICALS 2007 12
Epoetin alfa
Retacrit
/Silapo
EMA [3](PK) III

() (PK)
Epoetin (Correction of Epoetin Serum
Concentrations Based on the Protein Content of the Used Batches Erypo ®
(PK profile)
(Equivalence Margin) EMA CHMP (Committee for Medicinal Products for
Human Use) AUC 80-125%Cmax 70-143%

05-05-0000 24 IV Erypo ® Single Dose, Two-Period Cross Over
03-09-0001 48 SC/IV Erypo ® Single Dose, Three-Period Cross Over


Guideline

24
EPO (Hemoglobin) 9 (1:1)
Erypo ®
RegMed 2015 Vol. 62 10
SB3098.07 g/dlErypo® 8.04g/dl(Coprimary Endpoint)
1) 4 EPO (
95%± 14 IU/kg/wk )2) 4
( 95%± 1g/dl )
4 SB309 Erypo®
() 4 EPO (SB309-
Erypo® ) 95%(35.34IU/Kg/wk) 14IU/Kg/wk
Erypo® ()SB309 4 Erypo®
10%
SB309 Erypo®
Mean Weekly Dosage of EPO/kg During the Last 4 wk (IU/Kg/wk)
95% CI Difference
Mean Hb During the Last 4 wk (g/dl)
95% CI Difference
Within predefined [-1; +1]
(±14 IU/kg/wk)
3
45 IU/kg/wk ( EPO Dynepo® EMA
) 40 IU/kg/wk
1 g/dl 95% 35.34
IU/Kg/wk()

04-04 24 12 16
RegMed 2015 Vol. 62 11
(Crossover Design)313
Erypo® 10.5 12.5 g/dl
Erypo® Erypo®
SB309
Erypo® ) 95%± 0.6 g/dl
SB309 Erypo® ()
SB309 04-04 [3]
SB309 Erypo®
Intra-Individual Change (Test-Reference) in Mean Weekly EPO Dose /kg during DB
Period (IU/Kg/wK)
Intra-Individual Change (Test-Reference) in Mean Hb during DB Period (g/dl)
95% CI Difference
(Carry-Over Effect)
4
52
2 12 EPO

12 12
8.7±0.92 g/dl 11.4±1.98 2.7g/dl Epoetin alfa
RegMed 2015 Vol. 62 12
( 12-28 11.3-12g/dl
1.8-3.3g/dl) Epoetin 502.7~598.7IU/Kg
() 12-24 618
745 52 208
(PRCA)
()


EMA Guideline

2014 12 16
1) 4 (21~24 )
2) 4 EPO
RegMed 2015 Vol. 62 13
JR-103, Epoetin Kappa (Epoetinalfa BS [JCR]
)

()
ESPO® ()
Healthy Volunteers 24 IV Placebo Controlled Single Dose
(Exploratory)
Renal Anemia
Patients on
()
II/III 24 329
ESPO®

(52 ) Anti-Epoetin
Antibody
RegMed 2015 Vol. 62 14
PMDA PMDA
1) 500 5 2)
Anemia of Prematurity 3)





1041403614 )
3. EMA. (2007) Retacrit (SB309, epoetin zeta)EPAR-Scientific Discussion.
4. TeruyoA, Teruhide Y., et alExperience of Reviewing the Follow-on Biologics including
Somatropin and Erythropoietin in Japan. Biological 39 (2011)289-292.
5. EMA (2010) Guideline on Non-Clinical and Clinical Development of Similar Biological
Medicinal Products Containing Recombinant Erythropoietins (Revision).