Anti-Diabetic and Antiresorptive Pharmacotherapies for Prevention and Treatment of Type 2 Diabetes-Induced Bone Disease: Protocol for a Two-Part Systematic Review and Network Meta-Analysis
2019
Introduction
Glucocorticoid (GC) administration is an effective therapy commonly used in the treatment of autoimmune and inflammatory diseases. However, the use of GC can give rise to serious complications. The main detrimental side effect of GC therapy is significant bone loss, resulting in glucocorticoid-induced osteoporosis (GIOP).
There are a variety of treatments available for preventing and managing GIOP; however, without clearly defined guidelines, it can be very difficult for physicians to choose the optimal therapy for their patients. Previous network meta-analyses (NMAs) and meta-analyses did not include all available RCT trials, or only performed pairwise comparisons. We present a protocol for a NMA that incorporates all available RCT patient data to provide the most comprehensive ranking of all available GIOP treatments in terms of their ability to increase bone mineral density (BMD) and decrease fracture incidences among adult patients undergoing GC treatments.
Methods and Analysis
We will search MEDLINE, EMBASE, PubMed, Web of Science, CINAHL, CENTRAL and Chinese literature sources (CNKI, CQVIP, Wanfang Data, Wanfang Med Online) for randomized controlled trials (RCTs) which fit our criteria. RCTs that evaluate different antiresorptive regimens taken by adult patients undergoing GC therapy during the study or had taken GC for at least 3 months in the year prior to study commencement with lumbar spine BMD, femoral neck BMD, total hip BMD, vertebral fracture incidences and/or non-vertebral fracture incidences as outcomes will be selected.
We will perform title/abstract and full-text screening as well as data extraction in duplicate. Risk of bias (ROB) will be evaluated in duplicate for each study, and the quality of evidence will be examined using CINeMA in accordance to the GRADE framework. We will use R and gemtc to perform the NMA. We will report BMD results as weighted mean differences (WMDs) and standardized mean differences (SMDs), and we will report fracture incidences as odds ratios. We will use the surface under the cumulative ranking curve (SUCRA) scores to provide numerical estimations of the rankings of interventions.
Ethics and Dissemination
The study will not require ethical approval. The findings of the NMA will be disseminated in a peer-reviewed journal and presented at conferences. We aim to produce the most comprehensive quantitative analysis regarding the management of GIOP. Our analysis should be able to provide physicians and patients with an up-to-date recommendation for pharmacotherapies in reducing incidences of bone loss and fractures associated with GIOP.
Systematic Review Registration
International Prospective Register for Systematic Reviews (PROSPERO): CRD42019127073
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