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Вопросы иммуногенности и безопасности биологической терапии

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F . , - Krieckaert L, et al. Curr Opin Rheumatol 2012, 24:306311

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- , *Maneiro JR, et al. JAMA Intern. Med. 2013; 1-13* - ** - , , ***

( )IFX1ETA2ADA3CZP4GOL5RA8%6%5.5%7.7%5%AS-2%8.3%-5%PsA15%7.5%10%-5%

NB: , eMC website: www.medicines.org.uk/emc/ Accessed 02/11/11Remicade SPCEnbrel SPCHumira SPC Cimzia SPCSimponi SPC7ABTA 2015 | Company Confidential 2015

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?Hetland ML et al. Direct comparison of treatment responses, remission rates, and drug adherence in patients with rheumatoid arthritis treated with adalimumab, etanercept, or infliximab: results from eight years of surveillance of clinical practice in the nationwide Danish DANBIO registry. Arthritis & Rheumatism 2010;62(1):2232 ABTA 2015 | Company Confidential 2015 2326 8 , - EULAR 6 12 29 21% , , 15 12%, .

1814 , (63%) (37%). EULAR 6 12 29 21% , , 15 12%, . , , .

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Kreickart et al. A&R , v64, No. 12, Dec 2012, pp 38503855 , (P=0.42).

ABTA 2015 | Company Confidential 2015

Guidelines on the Clinical Investigations of the Pharmacokinetics of the Therapeutic Proteins of 31 July 2007

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JAMA.2011 Apr 13;305(14):1460-8

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(AAA) : 272 , ; 3

28% AAA. 18% 28 . AAA- (AAA+) , AAA- (AAA-) . AAA+ (DAS28100 AU/ml0

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Bartelds GM, et al. JAMA. 2011;305:14601468. 14

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: 196 AAA- (72% )76 AAA+ (28% )28 (14% AAA-)29 - (38% AAA+)

3 Bartelds et al., JAMA, 2011; 305(14): 1460-146816ABTA 2015 | Company Confidential 2015272

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28 - AAA-29 - AAA+57

3 21% 10.3% -49% , ADA 10.7% -51% , ADA

17Bartelds et al., JAMA, 2011; 305(14): 1460-1468 : 272

This is another way to look at their data which I think is more useful from a HCP perspective.

In the article they are saying (you can find the data on pages 1462-64 and also summed up on slide 20):

272 total patients in studyBy end of study (3 years later):76 pts are AAA+ (i.e. 28% of total)196 pts are AAA- (72% of total)Then instead of looking at the number of people who discontinued treatment because of Loss of Efficacy in relation to the overall number of pts who started therapy, they carry out a sub-analysis on AAA+ and AAA- subsets. So their message is: 29 pts discontinued treatment because of LOE i.e. 38% (29/76) of the AAA+ sub-population28 pts discontinued treatment because of LOE i.e. 14% (28/196) of the AAA- sub-population

I think that by presenting the data the way they do, they emphasise data which are not relevant to the HCPs (unless the HCPs are going to do regular blood tests to assess AAAs and try to use these results as a (poor) indicator of potential outcomes - which we know they won't).

I would argue that the way to look at the pts who dropped out because of treatment failures is in relation to the total patient population (which is ultimately the only thing that would matter to the HCPs i.e. 'if I put 272 patients on ADA, how many of those will discontinue because of treatment failure?) In that case the data would look like (as presented on slide 19):

272 patients in studywithin 3 years:57 discontinued treatment because of LOE (21% of total pts)of those:29 were AAA+ (10.7% of total patients and 51% of pts who discontinued for LOE)28 were AAA- (10.3% of total patients and 49% of pts who discontinued for LOE)

The message becomes clearer:- only a small proportion of pts will stop treatment because of treatment failure (21% - this is probably in line with clinical trials and registries)- of those roughly half are AAA+ and half are AAA- (so doesn't seem to be a differentiator)- of the total pts population observed, only 10.7% discontinued treatment for treatment failure and were AAA+

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After 28 weeks of treatment, response to etanercept did not differ between patients who were anti-TNF naive and switchers with anti-drug antibodies (DAS28=2.11.3 vs DAS28=2.01.3; p=0.743). In contrast, switchers without anti-drug antibodies had a diminished response to etanercept treatment compared to patients who were TNF naive (DAS28=1.21.3 vs DAS28=2.11.3; p=0.001) and switchers with antibodies (DAS28=1.21.3 vs DAS28=2.01.3; p=0.017).

Patients with RA with an immunogenic response against a first TNF-blocking agent had a better clinical response to a subsequent TNF blocker compared to patients with RA without anti-drug antibodies. Hence, determining immunogenicity can be helpful in deciding in which patient switching could be beneficial and can be part of a personalised treatment regimen.19

Jamnitski A, Bartelds GM, Nurmohamed MT, et al. The presence or absence of antibodies to infliximab or adalimumab determines the outcome of switching to etanercept. Ann Rheum Dis2011;70:284-288 - () ?P=0.743P=0.001P=0.017

After 28 weeks of treatment, response to etanercept did not differ between patients who were anti-TNF naive and switchers with anti-drug antibodies (DAS28=2.11.3 vs DAS28=2.01.3; p=0.743). In contrast, switchers without anti-drug antibodies had a diminished response to etanercept treatment compared to patients who were TNF naive (DAS28=1.21.3 vs DAS28=2.11.3; p=0.001) and switchers with antibodies (DAS28=1.21.3 vs DAS28=2.01.3; p=0.017).20

21

ABTA 2015 | Company Confidential 2015 - () ?Jamnitski A, Bartelds GM, Nurmohamed MT, et al. The presence or absence of antibodies to infliximab or adalimumab determines the outcome of switching to etanercept. Ann Rheum Dis2011;70:284-288: (anti-drug antibodies ADA). , , .

Patients with RA with an immunogenic response against a first TNF-blocking agent had a better clinical response to a subsequent TNF blocker compared to patients with RA without anti-drug antibodies. Hence, determining immunogenicity can be helpful in deciding in which patient switching could be beneficial and can be part of a personalised treatment regimen.21

3 65

3 , , ( EULAR 6 ) 3.1 / 3 ( DAS28 6 )Daien CI, et al. J Rheumatol. 2012;39:15331538.

p=0.0202ETN 3.146ETN < 3.1DAS28 at 6 months

p=0.0302NR at 6 months486R at 6 monthsETN at 3 months (g/ml)

NR = Non Responder R= Responder22 . .

22Between 2009 and 2010, we included 19 women with active RA who were candidates for ETN therapy. Response criteria were evaluated at 3 and 6 months. Serum concentrations of ETN and anti-ETN antibodies were measured by ELISA at baseline and at 3 and 6 months.Results. Eighteen patients completed followup. Three-month ETN concentrations were lower for 6-month nonresponders than responders (p = 0.03). Three-month ETN levels correlated significantly with change in DAS28 between baseline and 6 months (r = 0.62, p = 0.006). The best predictor of response at 6 months was observed with an ETN threshold of 3.1 g/ml at 3 months. No anti-ETN antibodies were found.

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, , , , , , , Krieckaert CL, et al. Ann Rheum Dis. 2012;71:19141915. Van Schouwenburg, et al. ARD. 2013;72:104109; ARD. 2013;72:16801686.% () (12.520 mg/week)04010560208414014281128470431541263060 50

(510 mg/week) (22.5 mg/week)

26

No MTX (0 mg/week, n=70), low dose MTX (510 mg/week, n=40), intermediate dose MTX (12.520 mg/week, n=54), or high dose MTX (22.5 mg/week, n=108)

26

CONCERTO: 26 40 mg ADA + 2.5 mg MTX40 mg ADA + 5 mg MTX40 mg ADA + 10 mg MTX40 mg ADA + 20 mg MTXITT-NRIITT, intent to treat; NRI, non-responder imputation Burmester G, et al. Ann Rheum Dis 2014;18 Feb [Epub ahead of print]100806040200 (%)

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p=0.005 , DAS28(CRP)< 3.227 10 20

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- 4.5 7.0/1 10 10 20 . : 59 g/mL2ADA (/) ()28 Burmester G, et al. Ann Rheum Dis 2014;18 Feb [Epub ahead of print]

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: () () , : ( .. ) ; U.S. Food and Drug Administration.Code of federal regulations, Title 21. http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?fr=312.32. Accessed 3 July 2012.

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: ( 1.28, =0.00013) ( 1.47, =0.012) ( 1.37, P=0.015) ( 4.68, =0.028)

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: ( 1.09, =0.2) ( 0.53, =0.27) ( 0.69, P=0.6)

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(vs. control) : ( 2.34) ( 1.55) * (vs. control) : ( 1.57) ( 4.75) * (vs. control) : ( 4.05)

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N. A. Accortt et al., A retrospective database analysis describing recurrent infection risk among patients using TNF-inhibitors, other biologic DMARDS , and non-biologic DMARDS, presented at EULAR 2014, abs FRI0257/100 -

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Burmester GR, et al. Ann Rheum Dis. 2009;68:1863-1869 Schiff MH, et al. Ann Rheum Dis. 2006;65:889-894 Burmester GR et al. Ann Rheum Dis 2012. Jul 6 [Epub] 71 ( , , )

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