Target X Inhibitor: Treating Fibrotic diseases of the Lung and Kidney (Phase II)
Owned and Not Available for Licensing
Phase 1 Clinical Stage Development
In vivo efficacy studies with single agent
Bleomycin and combo study with Nintedanib & Pirfenidone
In vivo PK-PD
In vivo PK studies
In vivo efficacy studies
In vitro ADMET studies
In vitro cell-based
Fibrosis is defined as an excessive deposition of connective tissue components, considered as the endpoint of pathological remodeling. It contributes to the pathogenesis of several chronic diseases and aging related organ damage including that of – skin, lungs, heart, liver, kidney etc. Fibrotic tissue remodeling often leads to organ malfunction and is commonly associated with high morbidity and mortality. It is the result of chronic inflammatory reactions and chronic aberrant wound-healing response.
The key cellular mediator of fibrosis is the myofibroblast, which when activated serves as the primary collagen-producing cell. Myofibroblasts are activated by a variety of mechanisms, and targeting these factors is an ideal strategy for drug development.
Due to the unmet medical needs for fibrotic diseases, Insilico Medicine capitalized on PandaOmics to discover Target X – a novel target for fibrosis. Then Insilico Medicine leveraged Chemistry42 to generate inhibitor candidates based on their high potency, and good development profile.
Insilico Medicine Target X Inhibitor Summary – Phase I Completed
Novel structure generated by AI
Target X is proposed as a novel target by Insilico Medicine's AI target discovery engine platform PandaOmics
Distinctly different structure generated by Insilico Medicine's AI small molecule generation platform Chemistry42
Robust in vitro and in vivo efficacy
Inhibited inflammation, myofibroblast activation, and fibrosis-related tissue remodeling
Expansion into kidney fibrosis indication with additional novel product candidates
Promising drug-ability as a therapeutic agent
Balanced ADMET properties suitable for further development in clinical trials
Well tolerated in toxicity studies in mice and dogs
Validated combination potential with Nintedanib, and Pirfenidone
Favorable safety margin
Positive Phase I results with favorable PK profile
Generally safe and well tolerated by healthy volunteers
Idiopathic pulmonary fibrosis (IPF) is a type of chronic scarring lung disease characterized by a progressive and irreversible decline in lung function affecting around 5 million people globally. IPF carries a poor prognosis with a median survival of 3 to 4 years and represents a significant unmet medical need. Nintedanib and Pirfenidone are two drugs approved for treatment. However, their efficacy is moderate, and they do not halt or reverse the disease. Moreover, the side effects are frequent and include nausea, diarrhea, and liver damage risk leading to high discontinuation rate.
Kidney fibrosis is due to failure in wound healing of the kidney tissue, and the progressive disease is characterized by glomerulosclerosis, and tubulointerstitial fibrosis. Following kidney injury, progressive fibrosis leads to a detrimental effect on the kidney function and ultimately results in end-stage renal failure. The degree of renal fibrosis correlates with kidney function and Chronic Kidney Disease (CKD) stages. Currently, no targeted therapy exists to slow the kidney fibrosis.
Similar studies have also identified the involvement of Target X in skin fibrosis (hypertrophic scarring) and liver fibrosis.
Project Status – Phase II
INS018_055 is a potent and selective small molecule inhibitor of target X with high affinity for the treatment of IPF. Preclinical data support the activity of INS018_055 and its combination use with Nintedanib & Pirfenidone in lung fibrosis models.
The results of the Phase I clinical trial in New Zealand demonstrated good safety, tolerability and pharmacokinetics data of INS018_055 in healthy participants. The interim results of a Phase I clinical trial in China also demonstrated similar encouraging safety and tolerability of INS018_055 in healthy participants.