It is recommended that a panel of investigators with a proven track record of using well-characterized animal models of T1D for disease reversal should be assembled with a mandate to develop a consensus on which animal models should be used and how precisely experiments should be carried out to meet FDA requirements for study approvals. Preclinical studies are carried out ideally at more than one site to circumvent local animal colony-related artefacts. In order
to assure uniformity when making comparisons between studies, standard operating procedures should be defined and standardized positive controls (e.g. anti-CD3) should ABT-263 be instituted so that data from multiple laboratories could be obtained and be directly comparable. Such a consortium could consist of geographically diverse laboratories employing the same preclinical models in a standardized manner to examine combination therapies that are recommended by the ITN–JDRF Type 1 Diabetes Combination Therapies Assessment CHIR-99021 datasheet Group. This would allow at least three laboratories to test the same combination therapy independently and simultaneously. In general, all tests should be conducted in models of recent-onset diabetes, wherein the blood glucose values and age of each mouse at inception of the intervention have to be tracked as independent variables
that are likely to affect the outcome of the treatment. To this end the ITN, in co-operation with JDRF, has begun developing a consortium of laboratories to carry out preclinical evaluations of combination therapies in Idoxuridine type 1 diabetes. The consortium will consist of ∼6 geographically diverse, independent laboratories that will, in parallel, assess toxicology, pharmacodynamics and efficacy of potential combinations. All laboratory protocols will be standardized and all therapeutics would come from a standardized central source, preferably ‘good manufacturing practice’ (GMP)-grade material. The goal of this initiative is to provide an infrastructure that generates high-quality preclinical data rapidly to stimulate clinical assessments of novel combination therapies in T1D.
It is recommended that the above-mentioned preclinical studies also attempt to identify suitable biomarkers. One major gap is that animal studies notoriously track cells in tissues such as the pancreatic draining lymph node, whereas human studies will naturally have to use peripheral blood. As it is known that there can be substantial homing differences between different lymphoid compartments, it would be optimal to generate peripheral blood data during the preclinical animal studies so that precursor numbers and changes in lymphocyte subsets over time can be estimated more accurately. These efforts should then be aligned with current attempts to identify biomarkers within clinical trials in new-onset T1D, for example, at an annual biomarker meeting of participating entities.
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