The study will be a multi-center, randomized, open label, parallel trial conducted in rheumatoid arthritis patients treated with glucocorticoids. After signing the informed consent, all patients will be screened as per the inclusion and exclusion criteria. Estimated 314 eligible patients will be enrolled. The enrolled patients will be randomly assigned to either Eldecalcitol group or Alfacalcidol group in a 1:1 ratio and followed up for 12 months. On-site follow up visits will be conducted at Month 6 and 12 after enrollment. The study is designed to evaluate the efficacy and safety of Eldecalcitol in preventing glucocorticoid-induced bone loss in rheumatoid arthritis patients.
After having signed informed consent (Day 0), the patients will be screened for enrollment. About 314 eligible patients will be enrolled in this study. The background information of eligible patients including demographic characteristics, history of present illness, medical history, treatment history, etc., related questionnaire, baseline bone mineral density (BMD), X-ray examination result, High Resolution-Peripheral Quantitative Computed Tomography (HR-pQCT) examination result, quantitative ultrasound (QUS) examination result and lab test result will be collected at Day 0. After enrollment, the following information will be collected at 6 months and/or 12 months: related questionnaire, BMD, X-ray examination result, HR-pQCT examination result, QUS examination result and lab test result, medication adherence and AE information.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
314
Oral eldecalcitol 0.75μg daily
Oral Alfacalcidol 0.5μg daily
1.5g Calcium carbonate daily
Peking Union Medical College Hospital
Beijing, Beijing Municipality, China
Aerospace Central Hospital
Beijing, Beijing Municipality, China
Beijing Luhe hospital, Capital Medical University
Beijing, Beijing Municipality, China
Beijing Shijingshan Hospital
Beijing, Beijing Municipality, China
Beijing Shijitan Hospital
Beijing, Beijing Municipality, China
Beijing Shunyi hospital
Beijing, Beijing Municipality, China
Xuanwu Hospital, Capital Medical University
Beijing, Beijing Municipality, China
Percent change from baseline to month 12 in lumbar spine (L1-4) bone mineral density (BMD)
BMD will be measured using dual energy x-ray absorptiometry (DXA). Images will be analyzed by blinded independent central review.
Time frame: Baseline and 12 months
Percent change from baseline to month 6 in lumbar spine (L1-4) BMD
BMD will be measured using DXA. Images will be analyzed by blinded independent central review.
Time frame: Baseline and 6 months
Percent change from baseline in total hip BMD
BMD will be measured using DXA. Images will be analyzed by blinded independent central review.
Time frame: Baseline, 6 months and 12 months
Percent change from baseline in femoral neck BMD
BMD will be measured using DXA. Images will be analyzed by blinded independent central review.
Time frame: Baseline, 6 months and 12 months
Percent change from baseline to month 12 in broadband ultrasound attenuation (BUA) and speed of sound (SOS) measured by quantitative ultrasound (QUS)
Broadband ultrasound attenuation (BUA) and speed of sound (SOS) will be measured by quantitative ultrasound (QUS).
Time frame: Baseline and 12 months
Percent change from baseline in Procollagen Type 1 N-telopeptide (P1NP)
Serum P1NP will be tested
Time frame: Baseline, 6 months and 12 months
Percent change from baseline in Type 1 Collagen C-telopeptide (CTX)
Serum CTX will be tested
Time frame: Baseline, 6 months and 12 months
Percentage of patients diagnosed with osteoporosis at month 12
Time frame: Baseline and 12 months
Incidence of new vertebral fracture
New vertebral fracture will be confirmed by the lateral X-ray of thoracic/lumbar vertebrae
Time frame: Baseline and 12 months
Change from baseline in Quality of Life assessed using EQ-5D-5L
The EQ-5D-5L represents a global quality of life measure that includes multiple components potentially impacted by the anti-anginal treatments being examined. The EQ-5D-5L score includes questions on mobility, self-care, usual activities, anxiety/depression, and pain/discomfort on a 5-point scale: 1=No Problem, 2=Slight Problem, 3=Moderate Problem, 4=Severe Problem, 5=Extreme Problem or Inability. 0, 1, and negative values corresponding to death, full health, and health states worse than death, respectively. Higher scores indicated greater levels of problems across each of the five dimensions.
Time frame: Baseline, 6 months and 12 months
Change from baseline in the Health Assessment Questionnaire-Disability Index (HAQ-DI)
Physical function was assessed by HAQ-DI. It consisted of at least 2 questions per category, participant reported assessment of ability to perform tasks in 8 categories of daily living activities: dress/groom; arise; eat; walk; reach; grip; hygiene; and common activities over past week rated on a 4-point scale where 0 = no difficulty; 1 = some difficulty; 2 = much difficulty; 3 = unable to do. Overall score was computed as the sum of category scores and divided by the number of categories answered, ranging from 0 to 3, where 0 = no disability and 3 = unable to do, high-dependency disability.
Time frame: Baseline, 6 months and 12 months
Change from baseline in Disease Activity Score for 28 Joints -C-Reactive Protein (DAS28--CRP) Score
DAS28 is a composite score that includes 4 variables: TJC (based on 28 joints); SJC (based on 28 joints); General health (GH) assessment by the participant assessed from the ACR rheumatoid arthritis (RA) core set questionnaire (participant global assessment) in 100 mm visual analog scale (VAS). Marker of inflammation assessed by the high sensitivity C-reactive protein (hs-CRP) in mg/L. The DAS28 score provides a number indicating the current disease activity of the RA. DAS28 total score ranges from 2-10. A DAS28 score above 5.1 means high disease activity, whereas a DAS28 score below 3.2 indicates low disease activity and a DAS28 score below 2.6 means disease remission.
Time frame: Baseline, 6 months and 12 months
Percent change from baseline to month 12 in volumetric bone mineral density (vBMD) measured by High Resolution-Peripheral Quantitative Computed Tomography (HR-pQCT)
The vBMD includes several individual parameters as total volumetric bone mineral density (Tt.vBMD), trabecular volumetric bone density (Tb.vBMD), and cortical volumetric density (Ct.vBMD) which all in milligram/cubic centimetre.
Time frame: Baseline and 12 months
Percent change from baseline to month 12 in bone microarchitecture measured by High Resolution-Peripheral Quantitative Computed Tomography (HR-pQCT)
The bone microarchitecture include several individual parameters as trabecular bone volume fraction (BV/TV) in %, trabecular number (Tb.N) in 1/millimeter, trabecular thickness (Tb.Th) in millimeter, trabecular separation (Tb.Sp) in millimeter, cortical thickness(Ct.Th) in millimeter, and cortical porosity (Ct.Po) in %.
Time frame: Baseline and 12 months
Percent change from baseline to month 12 in bone geometry measured by High Resolution-Peripheral Quantitative Computed Tomography (HR-pQCT)
The bone geometry include several individual parameters as total bone cross-sectional area (Tt.Ar), cortical area (Ct.Ar), and trabecular area (Tb.Ar) which all in square millimeter.
Time frame: Baseline and 12 months
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