human
***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: BACKGROUND Patients treated with methotrexate for rheumatoid arthritis often improve but continue to have active disease . This study was undertaken to determine whether the addition of etanercept , a soluble tumor necrosis factor receptor (p75):Fc fusion protein ( TNFR : Fc ) , to methotrexate therapy would provide additional benefit to patients who had persistent rheumatoid arthritis despite receiving methotrexate .  METHODS In a 24-week , double-blind trial , we r and omly assigned 89 patients with persistently active rheumatoid arthritis despite at least 6 months of methotrexate therapy at a stable dose of 15 to 25 mg per week ( or as low as 10 mg per week for patients unable to tolerate higher doses ) to receive either etanercept ( 25 mg ) or placebo subcutaneously twice weekly while continuing to receive methotrexate . The primary measure of clinical response was the American College of Rheumatology criteria for a 20 percent improvement in measures of disease activity ( ACR 20 ) at 24 weeks . RESULTS The addition of etanercept to methotrexate therapy result ed in rapid and sustained improvement . At 24 weeks , 71 percent of the patients receiving etanercept plus methotrexate and 27 percent of those receiving placebo plus methotrexate met the ACR 20 criteria ( P<0.001 ) ; 39 percent of the patients receiving etanercept plus methotrexate and 3 percent of those receiving placebo plus methotrexate met the ACR 50 criteria ( for a 50 percent improvement ) ( P<0.001 ) . Patients receiving etanercept plus methotrexate had significantly better outcomes according to all measures of disease activity . The only adverse events associated with etanercept were mild injection-site reactions , and no patient withdrew from the study because of adverse events associated with etanercept . CONCLUSIONS In patients with persistently active rheumatoid arthritis , the combination of etanercept and methotrexate was safe and well tolerated and provided significantly greater clinical benefit than methotrexate alone Objective To investigate the long-term effects of induction therapy with adalimumab ( ADA ) plus methotrexate ( MTX ) in comparison with placebo ( PBO ) plus MTX in DMARD-naïve patients with active early rheumatoid arthritis ( RA ) . Methods Patients with active early RA ( disease duration of ≤12 months ) were r and omly assigned to receive 40 mg ADA subcutaneously every other week ( eow ) plus MTX 15 mg/week subcutaneously or PBO plus MTX subcutaneously at 15 mg/week over 24 weeks . Thereafter , all patients received MTX monotherapy up to week 48 . The primary outcome was the Disease Activity Score 28 ( DAS28 ) at week 48 . Secondary outcomes included proportions of patients in remission ( DAS28<2.6 ) , ACR responses , Health Assessment Question naire ( HAQ ) score and radiographic progression . Results 87 patients were assigned to ADA/MTX and 85 patients to PBO/MTX . At baseline , DAS28 was 6.2±0.8 in the ADA/MTX and 6.3±0.9 in the PBO/MTX groups . At week 24 , treatment with ADA/MTX compared with PBO/MTX result ed in a greater reduction in DAS28 ( 3.0±1.2 vs 3.6±1.4 ; p=0.009 ) and other secondary outcomes such as DAS28 remission rate ( 47.9 % vs 29.5 % ; p=0.021 ) and HAQ ( 0.49±0.6 vs 0.72±0.6 ; p=0.0014 ) . At week 48 , the difference in clinical outcomes between groups was not statistically significant ( DAS28 : 3.2±1.4 vs 3.4±1.6 ; p=0.41 ) . Radiographic progression at week 48 was significantly greater in patients administered PBO/MTX ( Sharp/van der Heijde score : ADA/MTX 2.6 vs PBO/MTX 6.4 ; p=0.03 , Ratingen score : 1.7 vs 4.2 ; p=0.01 ) . Conclusions A greater reduction in radiographic progression after initial combination therapy with ADA and MTX was seen at week 48 , even after discontinuation of ADA treatment at week 24 . This sustained effect was not found at the primary endpoint ( DAS28 reduction ) OBJECTIVE To investigate the effectiveness of 4 different treatment strategies for recent-onset rheumatoid arthritis ( RA ) on 2-year patient-reported outcomes , including functioning and quality of life . METHODS A total of 508 patients with recent-onset RA were r and omly assigned to 1 ) sequential monotherapy , 2 ) step-up combination therapy , both starting with methotrexate , 3 ) initial combination therapy , including a tapered high-dose prednisone , or 4 ) initial combination therapy with methotrexate and infliximab . Treatment was adjusted every 3 months if the Disease Activity Score ( DAS ) remained > 2.4 . The McMaster Toronto Arthritis Patient Preference Disability Question naire , the Short Form 36 ( SF-36 ) , and scores for pain , global health , and disease activity measured on a 100-mm visual analog scale ( VAS ) were compared between groups at baseline and every 3 months thereafter for 2 years . RESULTS After 2 years , all patient-reported outcomes had improved significantly from baseline , irrespective of the treatment strategy . SF-36 subscale scores approached population norms for 3 physical components , and achieved population norms ( P > 0.05 ) for bodily pain and 4 mental components . Improvement in functioning , VAS scores , and physical items of the SF-36 occurred significantly earlier in patients treated with initial combination therapies ( all comparisons after 3 months : overall P < 0.001 ; P < 0.05 for groups 1 and 2 versus groups 3 and 4 ) . CONCLUSION All 4 DAS-driven treatment strategies result ed in substantial improvements in functional ability , quality of life , and self-assessed VAS scores after 2 years . Initial combination therapy led to significantly faster improvement in all patient-reported measures OBJECTIVE Several treatment strategies have proven value in the amelioration of rheumatoid arthritis ( RA ) , but the optimal strategy for preventing long-term joint damage and functional decline is unclear . We undertook this study to compare clinical and radiographic outcomes of 4 different treatment strategies , with intense monitoring in all patients . METHODS In a multicenter , r and omized clinical trial , 508 patients were allocated to 1 of 4 treatment strategies : sequential disease-modifying antirheumatic drug monotherapy ( group 1 ) , step-up combination therapy ( group 2 ) , initial combination therapy with tapered high-dose prednisone ( group 3 ) , and initial combination therapy with the tumor necrosis factor antagonist infliximab ( group 4 ) . Treatment adjustments were made every 3 months in an effort to obtain low disease activity ( a Disease Activity Score in 44 joints of < or = 2.4 ) . RESULTS Initial combination therapy including either prednisone ( group 3 ) or infliximab ( group 4 ) result ed in earlier functional improvement than did sequential monotherapy ( group 1 ) and step-up combination therapy ( group 2 ) , with mean scores at 3 months on the Dutch version of the Health Assessment Question naire ( D-HAQ ) of 1.0 in groups 1 and 2 and 0.6 in groups 3 and 4 ( P < 0.001 ) . After 1 year , mean D-HAQ scores were 0.7 in groups 1 and 2 and 0.5 in groups 3 and 4 ( P = 0.009 ) . The median increases in total Sharp/Van der Heijde radiographic joint score were 2.0 , 2.5 , 1.0 , and 0.5 in groups 1 - 4 , respectively ( P < 0.001 ) . There were no significant differences in the number of adverse events and withdrawals between the groups . CONCLUSION In patients with early RA , initial combination therapy including either prednisone or infliximab result ed in earlier functional improvement and less radiographic damage after 1 year than did sequential monotherapy or step-up combination therapy OBJECTIVES In early and active RA despite MTX , continuous treatment with TNF blockers in combination with MTX is recommended . To compare this strategy with an initial combination of MTX and adalimumab ( ADA ) given for 3 months and then adjusted based on the disease activity status . METHODS Prospect i ve unblinded r and omized multicentre controlled 1-year trial in which 65 patients with early ( < 6 months ) and active [ disease activity score ( DAS28(ESR ) ) > 5.1 ] RA were assigned to Group 1 ( 32 patients ):  MTX ( 0.3 mg/kg/week , maximum of 20 mg/week , without escalating dose regimen ) or to Group 2 ( 33 patients ): initial combination therapy with MTX ( as in Group 1 ) and ADA ( 40 mg eow ) . In both groups , treatment was adjusted every 3 months . The aim was to achieve a low DAS ( DAS28(ESR ) < 3.2 ) . RESULTS From Week 12 until Week 52 , seven patients in Group 1 and 11 patients in Group 2 remained in low disease activity state while receiving MTX monotherapy ( P = 0.28 ) . The 1-year area under the curve ( AUC ) of DAS28 was lower in Group 2 owing to an initial better response . The total intake of anti-TNF-alpha and the mean increase in total modified Sharp score was similar in the two groups . CONCLUSIONS Initial combination of MTX and ADA and then an adjusted based on the disease activity status achieved a faster control of disease activity but did not increase the number of patients for whom anti-TNF-alpha treatment was not needed after 12 weeks nor a better subsequent clinical or radiological outcome than a 3-month delayed initiation of anti-TNF in patients with still active disease despite MTX OBJECTIVE Anti-tumor necrosis factor alpha agents are among the most effective therapies for rheumatoid arthritis ( RA ) . However , their optimal use is yet to be determined . This 12-month double-blind study attempted remission induction using st and ard therapy with or without infliximab in patients with early , poor-prognosis RA . The primary end point was synovitis ( measured by magnetic resonance imaging [ MRI ] ) . Clinical observations continued to 24 months . METHODS All patients had fewer than 12 months of symptoms . Assessment s included full metrologic evaluation , laboratory tests , radiographs , functional evaluation using the Health Assessment Question naire ( HAQ ) , and quality of life measurement using the RA Quality of Life ( RAQoL ) question naire . MRI was performed at 0 , 4 , 14 , and 54 weeks ; MR images were scored blindly . Patients received methotrexate ( MTX ) and were r and omized to receive either infliximab or placebo for 12 months . RESULTS Twenty patients were recruited ( mean age 52 years , mean symptom duration 6 months , mean C-reactive protein level 42 mg/liter , and 65 % rheumatoid factor positive ) . At 1 year , all MRI scores were significantly better , with no new erosions in the infliximab plus MTX group ; a greater percentage of infliximab plus MTX-treated patients fulfilled the American College of Rheumatology ( ACR ) 50 % and 70 % improvement criteria ( 78 % versus 40 % in the placebo plus MTX group and 67 % versus 30 % , respectively ) and had a greater functional benefit ( P < 0.05 for all comparisons ) . Importantly , at 1 year after stopping induction therapy , response was sustained in 70 % of the patients in the infliximab plus MTX group , with a median Disease Activity Score in 28 joints ( DAS28 ) of 2.05 ( remission range ) . At 2 years , there were no significant between-group differences in the DAS28 , ACR response , or radiographic scores , but differences in the HAQ and RAQoL scores were maintained ( P < 0.05 ) . CONCLUSION Remission induction with infliximab plus MTX provided a significant reduction in MRI evidence of synovitis and erosions at 1 year . At 2 years , functional and quality of life benefits were sustained , despite withdrawal of infliximab therapy . These data may have significant implication s for the optimal use of expensive biologic therapies OBJECTIVE To evaluate the efficacy and safety of 2 dosage regimens of lyophilized certolizumab pegol ( a novel PEGylated anti-tumor necrosis factor agent ) as adjunctive therapy to methotrexate ( MTX ) in patients with active rheumatoid arthritis ( RA ) with an inadequate response to MTX therapy alone . METHODS In this 52-week , phase III , multicenter , r and omized , double-blind , placebo-controlled , parallel-group trial , 982 patients were r and omized 2:2:1 to receive treatment with subcutaneous certolizumab pegol at an initial dosage of 400 mg given at weeks 0 , 2 , and 4 , with a subsequent dosage of 20 
    Output:
    
agent
***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: BACKGROUND Patients treated with methotrexate for rheumatoid arthritis often improve but continue to have active disease . This study was undertaken to determine whether the addition of etanercept , a soluble tumor necrosis factor receptor (p75):Fc fusion protein ( TNFR : Fc ) , to methotrexate therapy would provide additional benefit to patients who had persistent rheumatoid arthritis despite receiving methotrexate .  METHODS In a 24-week , double-blind trial , we r and omly assigned 89 patients with persistently active rheumatoid arthritis despite at least 6 months of methotrexate therapy at a stable dose of 15 to 25 mg per week ( or as low as 10 mg per week for patients unable to tolerate higher doses ) to receive either etanercept ( 25 mg ) or placebo subcutaneously twice weekly while continuing to receive methotrexate . The primary measure of clinical response was the American College of Rheumatology criteria for a 20 percent improvement in measures of disease activity ( ACR 20 ) at 24 weeks . RESULTS The addition of etanercept to methotrexate therapy result ed in rapid and sustained improvement . At 24 weeks , 71 percent of the patients receiving etanercept plus methotrexate and 27 percent of those receiving placebo plus methotrexate met the ACR 20 criteria ( P<0.001 ) ; 39 percent of the patients receiving etanercept plus methotrexate and 3 percent of those receiving placebo plus methotrexate met the ACR 50 criteria ( for a 50 percent improvement ) ( P<0.001 ) . Patients receiving etanercept plus methotrexate had significantly better outcomes according to all measures of disease activity . The only adverse events associated with etanercept were mild injection-site reactions , and no patient withdrew from the study because of adverse events associated with etanercept . CONCLUSIONS In patients with persistently active rheumatoid arthritis , the combination of etanercept and methotrexate was safe and well tolerated and provided significantly greater clinical benefit than methotrexate alone Objective To investigate the long-term effects of induction therapy with adalimumab ( ADA ) plus methotrexate ( MTX ) in comparison with placebo ( PBO ) plus MTX in DMARD-naïve patients with active early rheumatoid arthritis ( RA ) . Methods Patients with active early RA ( disease duration of ≤12 months ) were r and omly assigned to receive 40 mg ADA subcutaneously every other week ( eow ) plus MTX 15 mg/week subcutaneously or PBO plus MTX subcutaneously at 15 mg/week over 24 weeks . Thereafter , all patients received MTX monotherapy up to week 48 . The primary outcome was the Disease Activity Score 28 ( DAS28 ) at week 48 . Secondary outcomes included proportions of patients in remission ( DAS28<2.6 ) , ACR responses , Health Assessment Question naire ( HAQ ) score and radiographic progression . Results 87 patients were assigned to ADA/MTX and 85 patients to PBO/MTX . At baseline , DAS28 was 6.2±0.8 in the ADA/MTX and 6.3±0.9 in the PBO/MTX groups . At week 24 , treatment with ADA/MTX compared with PBO/MTX result ed in a greater reduction in DAS28 ( 3.0±1.2 vs 3.6±1.4 ; p=0.009 ) and other secondary outcomes such as DAS28 remission rate ( 47.9 % vs 29.5 % ; p=0.021 ) and HAQ ( 0.49±0.6 vs 0.72±0.6 ; p=0.0014 ) . At week 48 , the difference in clinical outcomes between groups was not statistically significant ( DAS28 : 3.2±1.4 vs 3.4±1.6 ; p=0.41 ) . Radiographic progression at week 48 was significantly greater in patients administered PBO/MTX ( Sharp/van der Heijde score : ADA/MTX 2.6 vs PBO/MTX 6.4 ; p=0.03 , Ratingen score : 1.7 vs 4.2 ; p=0.01 ) . Conclusions A greater reduction in radiographic progression after initial combination therapy with ADA and MTX was seen at week 48 , even after discontinuation of ADA treatment at week 24 . This sustained effect was not found at the primary endpoint ( DAS28 reduction ) OBJECTIVE To investigate the effectiveness of 4 different treatment strategies for recent-onset rheumatoid arthritis ( RA ) on 2-year patient-reported outcomes , including functioning and quality of life . METHODS A total of 508 patients with recent-onset RA were r and omly assigned to 1 ) sequential monotherapy , 2 ) step-up combination therapy , both starting with methotrexate , 3 ) initial combination therapy , including a tapered high-dose prednisone , or 4 ) initial combination therapy with methotrexate and infliximab . Treatment was adjusted every 3 months if the Disease Activity Score ( DAS ) remained > 2.4 . The McMaster Toronto Arthritis Patient Preference Disability Question naire , the Short Form 36 ( SF-36 ) , and scores for pain , global health , and disease activity measured on a 100-mm visual analog scale ( VAS ) were compared between groups at baseline and every 3 months thereafter for 2 years . RESULTS After 2 years , all patient-reported outcomes had improved significantly from baseline , irrespective of the treatment strategy . SF-36 subscale scores approached population norms for 3 physical components , and achieved population norms ( P > 0.05 ) for bodily pain and 4 mental components . Improvement in functioning , VAS scores , and physical items of the SF-36 occurred significantly earlier in patients treated with initial combination therapies ( all comparisons after 3 months : overall P < 0.001 ; P < 0.05 for groups 1 and 2 versus groups 3 and 4 ) . CONCLUSION All 4 DAS-driven treatment strategies result ed in substantial improvements in functional ability , quality of life , and self-assessed VAS scores after 2 years . Initial combination therapy led to significantly faster improvement in all patient-reported measures OBJECTIVE Several treatment strategies have proven value in the amelioration of rheumatoid arthritis ( RA ) , but the optimal strategy for preventing long-term joint damage and functional decline is unclear . We undertook this study to compare clinical and radiographic outcomes of 4 different treatment strategies , with intense monitoring in all patients . METHODS In a multicenter , r and omized clinical trial , 508 patients were allocated to 1 of 4 treatment strategies : sequential disease-modifying antirheumatic drug monotherapy ( group 1 ) , step-up combination therapy ( group 2 ) , initial combination therapy with tapered high-dose prednisone ( group 3 ) , and initial combination therapy with the tumor necrosis factor antagonist infliximab ( group 4 ) . Treatment adjustments were made every 3 months in an effort to obtain low disease activity ( a Disease Activity Score in 44 joints of < or = 2.4 ) . RESULTS Initial combination therapy including either prednisone ( group 3 ) or infliximab ( group 4 ) result ed in earlier functional improvement than did sequential monotherapy ( group 1 ) and step-up combination therapy ( group 2 ) , with mean scores at 3 months on the Dutch version of the Health Assessment Question naire ( D-HAQ ) of 1.0 in groups 1 and 2 and 0.6 in groups 3 and 4 ( P < 0.001 ) . After 1 year , mean D-HAQ scores were 0.7 in groups 1 and 2 and 0.5 in groups 3 and 4 ( P = 0.009 ) . The median increases in total Sharp/Van der Heijde radiographic joint score were 2.0 , 2.5 , 1.0 , and 0.5 in groups 1 - 4 , respectively ( P < 0.001 ) . There were no significant differences in the number of adverse events and withdrawals between the groups . CONCLUSION In patients with early RA , initial combination therapy including either prednisone or infliximab result ed in earlier functional improvement and less radiographic damage after 1 year than did sequential monotherapy or step-up combination therapy OBJECTIVES In early and active RA despite MTX , continuous treatment with TNF blockers in combination with MTX is recommended . To compare this strategy with an initial combination of MTX and adalimumab ( ADA ) given for 3 months and then adjusted based on the disease activity status . METHODS Prospect i ve unblinded r and omized multicentre controlled 1-year trial in which 65 patients with early ( < 6 months ) and active [ disease activity score ( DAS28(ESR ) ) > 5.1 ] RA were assigned to Group 1 ( 32 patients ):  MTX ( 0.3 mg/kg/week , maximum of 20 mg/week , without escalating dose regimen ) or to Group 2 ( 33 patients ): initial combination therapy with MTX ( as in Group 1 ) and ADA ( 40 mg eow ) . In both groups , treatment was adjusted every 3 months . The aim was to achieve a low DAS ( DAS28(ESR ) < 3.2 ) . RESULTS From Week 12 until Week 52 , seven patients in Group 1 and 11 patients in Group 2 remained in low disease activity state while receiving MTX monotherapy ( P = 0.28 ) . The 1-year area under the curve ( AUC ) of DAS28 was lower in Group 2 owing to an initial better response . The total intake of anti-TNF-alpha and the mean increase in total modified Sharp score was similar in the two groups . CONCLUSIONS Initial combination of MTX and ADA and then an adjusted based on the disease activity status achieved a faster control of disease activity but did not increase the number of patients for whom anti-TNF-alpha treatment was not needed after 12 weeks nor a better subsequent clinical or radiological outcome than a 3-month delayed initiation of anti-TNF in patients with still active disease despite MTX OBJECTIVE Anti-tumor necrosis factor alpha agents are among the most effective therapies for rheumatoid arthritis ( RA ) . However , their optimal use is yet to be determined . This 12-month double-blind study attempted remission induction using st and ard therapy with or without infliximab in patients with early , poor-prognosis RA . The primary end point was synovitis ( measured by magnetic resonance imaging [ MRI ] ) . Clinical observations continued to 24 months . METHODS All patients had fewer than 12 months of symptoms . Assessment s included full metrologic evaluation , laboratory tests , radiographs , functional evaluation using the Health Assessment Question naire ( HAQ ) , and quality of life measurement using the RA Quality of Life ( RAQoL ) question naire . MRI was performed at 0 , 4 , 14 , and 54 weeks ; MR images were scored blindly . Patients received methotrexate ( MTX ) and were r and omized to receive either infliximab or placebo for 12 months . RESULTS Twenty patients were recruited ( mean age 52 years , mean symptom duration 6 months , mean C-reactive protein level 42 mg/liter , and 65 % rheumatoid factor positive ) . At 1 year , all MRI scores were significantly better , with no new erosions in the infliximab plus MTX group ; a greater percentage of infliximab plus MTX-treated patients fulfilled the American College of Rheumatology ( ACR ) 50 % and 70 % improvement criteria ( 78 % versus 40 % in the placebo plus MTX group and 67 % versus 30 % , respectively ) and had a greater functional benefit ( P < 0.05 for all comparisons ) . Importantly , at 1 year after stopping induction therapy , response was sustained in 70 % of the patients in the infliximab plus MTX group , with a median Disease Activity Score in 28 joints ( DAS28 ) of 2.05 ( remission range ) . At 2 years , there were no significant between-group differences in the DAS28 , ACR response , or radiographic scores , but differences in the HAQ and RAQoL scores were maintained ( P < 0.05 ) . CONCLUSION Remission induction with infliximab plus MTX provided a significant reduction in MRI evidence of synovitis and erosions at 1 year . At 2 years , functional and quality of life benefits were sustained , despite withdrawal of infliximab therapy . These data may have significant implication s for the optimal use of expensive biologic therapies OBJECTIVE To evaluate the efficacy and safety of 2 dosage regimens of lyophilized certolizumab pegol ( a novel PEGylated anti-tumor necrosis factor agent ) as adjunctive therapy to methotrexate ( MTX ) in patients with active rheumatoid arthritis ( RA ) with an inadequate response to MTX therapy alone . METHODS In this 52-week , phase III , multicenter , r and omized , double-blind , placebo-controlled , parallel-group trial , 982 patients were r and omized 2:2:1 to receive treatment with subcutaneous certolizumab pegol at an initial dosage of 400 mg given at weeks 0 , 2 , and 4 , with a subsequent dosage of 20 
    Output:
    