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Interferonapathies such as lupus, Sjögren’s syndrome, and scleroderma could be treated effectively after positive human ex-vivo data was produced. Domainex Ltd., carried out an in-house research program to identify inhibitors of protein kinases TBK1 and IKK-epsilon and DMXD-011 has been nominated as a preclinical drug candidate. The molecule is orally-bioavailable and highly selective. Disease modifying The literature suggests that inhibitors of TBK1 and IKK-epsilon should be highly-effective disease-modifying drugs for the treatment of interferonopathies, as well as for other inflammatory diseases such as rheumatoid arthritis. Domainex has previously demonstrated the efficacy of DMXD-011 in animal models of lupus and rheumatoid arthritis, in full accordance with these mechanistic observations from the scientific literature, without any evidence of side effects or toxicity. Most recently, ex-vivo laboratory studies using blood samples taken from hospital patients suffering from a variety of interferonopathies were carried out by Domainex in collaboration with Marjan Versnel of the Erasmus University Medical Center in Rotterdam. DMXD-011 was added to the patients’ blood samples, and the levels of inflammatory biomarkers in the blood were measured before and after chemical stimulation of the immune cells to mimic a flare-up of the auto-immune disease. DMXD-011 showed a strong dose-dependent reduction in the expression of these biomarkers. Patient responses It is noteworthy that in analogous studies, AstraZeneca has reported that its recently-approved type 1 interferon receptor antibody anifrolumab (SaphneloTM) showed a similar effect, and it used the same biomarkers to demonstrate patient responses in some of the clinical studies with this drug. Tom Mander, CEO of Domainex, said: “We are very encouraged by the outcome of the ex vivo studies conducted by Dr Versnel and her team in the Netherlands. “It indicates that the TBK1/IKKe inhibitors in our granted-patent estate could have disease-modifying potential in interferonopathies and other inflammatory conditions. We have a very attractive opportunity for a licensing partner to take these compounds into pre-clinical and clinical development.”

Domainex Ltd

Domainex’ drug shows positive data for treatment of interferonopathies

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