DAS28 is a modification of the original DAS and is based on a count of 28 swollen and tender joints and is used to evaluate a participant's response to treatment. DAS 28 ESR utilizing joint scores from the following 28 joints: elbows, shoulders, elbow, wrists, metacarpal- phalangeal I-V, proximal interphalangeal I-V and knees and is calculated using the following formula: DAS28 (ESR) = 0.56*√(TJC28) +0.28*√(SJC28)+0.014*GH+0.7*ln(ESR). Where TJC - Tender joint Count, SJC= Swollen Joint Count, (GH=participant assessment of disease activity using a 100 millimeter [mm] visual analogue scale with 0 = best, 100 = worst) and ESR= erythrocyte sedimentation rate (in millimeter/hour] mm/hr). . High score (worse outcome) and low scores (better outcome).

DAS28 is a modification of the original DAS and is based on a count of 28 swollen and tender joints and is used to evaluate a participant's response to treatment. DAS 28 ESR utilizing joint scores from the following 28 joints: elbows, shoulders, elbow, wrists, metacarpal- phalangeal I-V, proximal interphalangeal I-V and knees and is calculated using the following formula: DAS28 (ESR) = 0.56*√(TJC28) +0.28*√(SJC28)+0.014*GH+0.7*ln(ESR). Where TJC - Tender joint Count, SJC= Swollen Joint Count, (GH=participant assessment of disease activity using a 100 millimeter [mm] visual analogue scale with 0 = best, 100 = worst) and ESR= erythrocyte sedimentation rate (in millimeter/hour] mm/hr).. High score (worse outcome) and low scores (better outcome).Baseline was defined as the last available assessment prior to the start of study treatment. Change from Baseline was calculated by subtracting the post dose visit value from the Baseline value.

DAS28(CRP) remission is defined as a DAS28 score of <2.6 points. The DAS index combines information relating to the number of swollen and tender joints. The DAS28 is a modification of the original DAS and is based on a count of 28 swollen and tender joints and is used to evaluate a participant's response to treatment. DAS 28 CRP utilizing joint scores from the following 28 joints: elbows, shoulders, elbow, wrists, metacarpal- phalangeal I-V, proximal interphalangeal I-V and knees and is calculated using the following formula: DAS28 (CRP) = 0.56*√(TJC28) +0.28*√(SJC28)+0.014*GH+0.36*ln(CRP+1)+0.96. Where TJC - Tender joint Count, SJC= Swollen Joint Count, (GH=participant assessment of disease activity using a 100 mm visual analogue scale with 0 = best, 100 = worst) and CRP= C reactive Protein (in mg/L). It ranges between 0.96 and 8.61. High score (worse outcome) and low scores (better outcome).

DAS28 is a modification of the original DAS and is based on a count of 28 swollen and tender joints and is used to evaluate a participant's response to treatment. DAS 28 ESR utilizing joint scores from the following 28 joints: elbows, shoulders, elbow, wrists, metacarpal- phalangeal I-V, proximal interphalangeal I-V and knees and is calculated using the following formula: DAS28 (ESR) = Joint Count, (GH=participant assessment of disease activity using a 100 millimeter [mm] visual analogue scale with 0 = best, 100 = worst) and ESR= erythrocyte sedimentation rate (in millimeter/hour] mm/hr). . High score (worse outcome) and low scores (better outcome).

DAS28 is a modification of the original DAS and is based on a count of 28 swollen and tender joints and is used to evaluate a participant's response to treatment. DAS 28 CRP utilizing joint scores from the following 28 joints: elbows, shoulders, elbow, wrists, metacarpal- phalangeal I-V, proximal interphalangeal I-V and knees and is calculated using the following formula: DAS28 (CRP) = 0.56*√(TJC28) +0.28*√(SJC28)+0.014*GH+0.36*ln(CRP+1)+0.96. Where TJC - Tender joint Count, SJC= Swollen Joint Count, (GH=participant assessment of disease activity using a 100 mm visual analogue scale with 0 = best, 100 = worst) and CRP= C reactive Protein (in mg/L). It ranges between 0.96 and 8.61. High score (worse outcome) and low scores (better outcome). Baseline was defined as the last available assessment prior to the start of study treatment. Change from Baseline was calculated by subtracting the post-dose visit value from the Baseline.

DAS28 is a modification of the original DAS and is based on a count of 28 swollen and tender joints and is used to evaluate a participant's response to treatment. DAS 28 ESR utilizing joint scores from the following 28 joints: elbows, shoulders, elbow, wrists, metacarpal- phalangeal I-V, proximal interphalangeal I-V and knees and is calculated using the following formula: DAS28 (ESR) = Joint Count, (GH=participant assessment of disease activity using a 100 millimeter [mm] visual analogue scale with 0 = best, 100 = worst) and ESR= erythrocyte sedimentation rate (in millimeter/hour] mm/hr). . High score (worse outcome) and low scores (better outcome). Baseline was defined as the last available assessment prior to the start of study treatment. Change from Baseline was calculated by subtracting the post-dose visit value from the Baseline.

DAS28(CRP) scores were categorized using EULAR response criteria. Response at a given time point was defined based on the combination of current DAS28 score and the improvement in the current DAS28 score relative to Baseline. The definition of no response, moderate response and good response was as follows: Current DAS28 <=3.2 and DAS28 decrease from Baseline (>1.2=good response), (>0.6 to <=1.2 = moderate response) and (<=0.6 =no response). Current DAS28 >3.2 to <=5.1 and DAS28 decrease from Baseline value (>1.2 =moderate response), (>0.6 to <=1.2 = moderate response) and (<=0.6 =no response). Current DAS28 >5.1 and DAS28 decrease from Baseline value (>1.2=moderate response), (>0.6 to <=1.2 = no response) and (<=0.6 =no response). If the post-Baseline DAS28(CRP) score was missing, then the corresponding EULAR category was set to missing.

CDAI combines information relating to the number of swollen and tender joints, in addition to a measure of general health from both the participants and the physician. CDAI utilizing joint scores from the following 28 joints: elbows, shoulders, elbow, wrists, metacarpal- phalangeal I-V, proximal interphalangeal I-V and knees and is calculated using the following formula: CDAI =TJC28 + SJC28 + GH + GP Where TJC - Tender joint Count, SJC= Swollen Joint Count, (GH=participant assessment of disease activity and GP=physician assessment of disease activity using a 10 cm visual analogue scale with 0 = best, 100 = worst). It ranges between 0 and 76. High score indicates worse outcome, low score indicates better outcome. Remission was achieved for a non-missing CDAI value <=2.8.

SDAI combines information relating to the number of swollen and tender joints, in addition to a measure of general health from both the participants and the physician and acute phase reactants. The SDAI utilizing joint scores from the following 28 joints: elbows, shoulders, elbow, wrists, metacarpal-phalangeal I-V, proximal interphalangeal I-V and knees. It is calculated using the following formula: SDAI = TJC28 + SJC28 + GH + GP + CRP Where TJC - Tender joint Count, SJC= Swollen Joint Count, (GH=participant assessment, GP= physician assessment of disease activity using a 10 centimetre [cm] visual analogue scale [VAS] with 0 = best, 10 = worst), and CRP= C reactive Protein (in mg/L). It ranges between 0.1 and 86. High score indicates worse outcome, low score indicates better outcome. Baseline was defined as the last available assessment prior to the start of study treatment. Change from Baseline was calculated by subtracting the post dose visit value from the Baseline value.

CPRI-RA is the first rheumatoid arthritis Patient Reported Outcome(Pro) scale in China that has achieved expert consensus.The scale contains 11 items, including joint pain (item 1), swelling (item 2), morning stiffness (item 3), local skin temperature (item 4), upper limb activity function (item 5), lower limb activity function (item 6), fatigue (item 7), muscle soreness (item 8), appetite (Item 9) Irritability or anxiety (item 10) and difficulty in daily life (item 11). Each item is scored 0, 1, 2 and 3 respectively according to the four grades from none to there and from light to heavy, and then the total score is calculated according to the weight.Total score calculation formula = 1.43×(item 1) + 0.93×(item 2) + 0.40×(item 3)+1. 09×(item 4)+ 0.11×(item 5) + 0.18×(item 6) + 0.24×(item 7) + 0. 04×(item 8)+ 1.17 × (Item 9)+ 0. 19 ×(item 10) + 0. 02 ×(item 11). Change from Baseline was calculated by subtracting the post dose visit value from the Baseline value.

HAQ-DI is 20-question instrument that assesses the degree of difficulty a person has in accomplishing tasks in eight functional areas;dressing and grooming, arising, eating, walking, hygiene, reach, grip, and common daily activities. Each functional area contains at least two questions. For each question, there is a four level response set that is scored from 0 (without any difficulty) to 3 (unable to do). If aids or devices or physical assistance are used for a specific functional area and the maximum response of this functional area is 0 or 1 the according value is increased to a score of 2. HAQ-DI is only calculated if there are at least 6 functional area scores available. The average of these non-missing functional area scores defines the continuous HAQ-DI score ranging from 0 to 3. Baseline was defined as the last available assessment prior to the start of study treatment. Change from Baseline was calculated by subtracting the post dose visit value from the Baseline value.

Sharp evaluation is mainly a method to evaluate the bone destruction of wrist in patients with rheumatoid arthritis. The 27 parts of the hand and wrist were used as scoring points, and the scores were added from the two aspects of erosion score and narrowing degree of joint cavity: 0 for no bone erosion, 5 for extensive bone erosion and loss, and 2-4 between the two; 0 points for no stenosis, 1 point for local stenosis, 2 points for diffuse stenosis with an area of 50%, 3 points for diffuse stenosis with an area of > 50%, and 4 points for ankylosis.On this basis, van der heiide revised the mTSS to reduce the 27 scoring sites of the hand and wrist to 17 erosion evaluation sites and 18 joint cavity narrowing evaluation sites.

The participants were tested with leucocyte count,platelet count,hemoglobin content and d-dimer test for regular metabolic function evaluation.The number of participants experiencing metabolic abnormal events have been reported.

The participants were tested with blood lipid [total cholesterol(TC), triglyceride(TG), low density lipoprotein cholesterol(LDL-C)], blood glucose (Glu), liver and kidney function [aspartate aminotransferase(AST), alanine aminotransferase(ALT), gama-glutamyltransferase(GGT), Urea(Ur), Crea(Cr)] for regular metabolic function evaluation .The number of participants experiencing metabolic abnormal events have been reported.

Electrocardiograph(ECG) and ultrasonic cardiogram were used to evaluate cardiac function.Baseline was defined as the last available assessment prior to the start of study treatment. The number of participants experiencing Cardiac events have been reported.

Pulmonary assessments were performed to determine the number of participants with pulmonary events including persistent cough, persistent dyspnea, and persistent Diffusing capacity of the lung for carbon monoxide (DLCO). Persistent is defined as any event with duration >=15 days. Baseline was defined as the last available assessment prior to the start of study treatment. The number of participants experiencing pulmonary events have been reported.