FGF-401 is an inhibitor of human fibroblast growth factor receptor 4 (FGFR4), with potential antineoplastic activity. Upon administration, FGF401 binds to and inhibits the activity of FGFR4, which leads to an inhibition of tumor cell proliferation in FGFR4-overexpressing cells. FGFR4 is a receptor tyrosine kinase upregulated in certain tumor cells and involved in tumor cell proliferation, differentiation, angiogenesis, and survival. FGF-401 is an FGFR4 inhibitor in phase I/II clinical studies at Novartis for the treatment of positive FGFR4 and KLB expression solid tumors and hepatocellular carcinoma.

Ruzasvir (previously known as MK-8408) was developed as a nonstructural protein 5A (NS5A) inhibitor for the treatment of hepatitis C and hepatitis C infection. Ruzasvir successfully completed phase II clinical trial for combination therapy. The obtained results have shown that ruzasvir in combination with uprifosbuvir was highly effective and well-tolerated in participants infected with hepatitis C virus genotypes GT1, GT2, GT4, GT5, and GT6, with a lower efficacy in GT3-infected persons.

MRX-I is a potent oxazolidinone antibiotic against Gram-positive pathogens, including methicillin-resistant Staphylococcus aureus, penicillin-resistant Streptococcus pneumoniae, penicillin-intermediate S. pneumoniae, and vancomycin-resistant enterococci. MRX-I demonstrated comparable or slightly higher activity than linezolid and was active against enterococci resistant to both vancomycin and teicoplanin. In addition, MRX-I exhibited bactericidal activities against staphylococci and streptococci but was bacteriostatic against enterococci. MRX-I inhibits formation of functional 70S initiation complex essential for bacterial protein synthesis, leading to the cessation of bacterial growth. Oral MRX-I was associated with a greater bioavailability and exposure when administered with food, and minimal accumulation of MRX-I occurred after multiple-dose administration. Oral MRX-I was well tolerated at single doses of up to 1,200 and 800 mg q12h for up to 28 days; all adverse events were mild to moderate in severity, and there was no drug discontinuation due to adverse events.

LIK-066 (licogliflozin) is an inhibitor of the sodium-dependent glucose co-transporter (sodium-glucose transporter; sodium-glucose transport protein; sodium-glucose linked transporter; SGLT) family members 1 and 2 (SGLT1/2) with antihyperglycemic activity. By binding to and blocking SGLT1/2, licogliflozin suppresses the reabsorption of glucose in the proximal tubule within the kidneys and enhances urinary excretion of glucose. This normalizes blood glucose levels. LIK-066 is in phase II clinical trials by Novartis for the treatment of type 2 diabetes. Licogliflozin treatment (1-84 days) leads to significant weight loss and favorable changes in a variety of metabolic parameters and incretin hormones. Dual inhibition of SGLT1/2 with licogliflozin in the gut and kidneys is an attractive strategy for treating obesity and diabetes.

PF-06700841 is an inhibitor of JAK1 and TYK2 kinases. PF-06700841 tosylate salt is potentially a treatment of systemic lupus erythematosus and plaque psoriasis.