Signal transducer and activator of transcription 3 (STAT3) is a transcription factor that in humans is encoded by the STAT3 gene. It is a member of the STAT protein family. STAT3 is a member of the STAT protein family. In response to cytokines and growth factors, STAT3 is phosphorylated by receptor-associated Janus kinases (JAK), forms homo- or heterodimers, and translocates to the cell nucleus where it acts as a transcription activator. Specifically, STAT3 becomes activated after phosphorylation of tyrosine 705 in response to such ligands as interferons, epidermal growth factor (EGF), Interleukin (IL-)5, and IL-6. STAT3 inhibits DC maturation and innate immunity through negatively regulating the expression of CXCL10 and CCL5 and so STAT3 inhibitors reverse the action. The mechanism of action (MOA) of STAT3 inhibitors is that they bind and induce cell death in tumor cells in which STAT3 is activated. STAT3 can also be inhibited by decoy ODNs (dODN), which bind STAT3 and induce cell death. STAT3 Inhibitors is used for the treatment of lymphoma, blood coagulation disorders, leukemia, sarcoma, hematologic diseases, glioblastoma, liver diseases, diabetes mellitus, gastroenteritis, hepatitis, etc. Increased prevalence of sarcoma and lymphoma are the key drivers for the STAT3 Inhibitor market. For instance, according to the World Health Organization 2023, non-Hodgkin lymphoma (NHL) is one of the most common cancers in the United States, accounting for about 4% of all cancers. The launch of newer products by the market players could seek opportunities that influence extensive research and development in STAT3 Inhibitor. For instance, Novartis’s Zykadia (Ceritinib) is used for the treatment of ALK+ metastatic non-small cell lung cancer. Moreover, the development of novel molecules by many market players is coming up to overcome challenges in therapy. For instance, Reata Pharmaceuticals Bardoxolone Methyl (RTA 402) for the treatment of connective tissue disease-associated pulmonary arterial hypertension is under the various stages of clinical studies.
Key Market Developments:
Approved Drug Molecules and Brand Names for STAT3 Inhibitor:
Zykadia (Ceritinib)
Alecensa (Alectinib)
Rezurock (Belumosudil)
Alunbrig (Brigatinib)
Drugs under the Pipeline for STAT3 Inhibitor:
Bardoxolone Methyl (RTA 402)
Ivarmacitinib (SHR0302)
Napabucasin (BBI608)
Danvatirsen (AZD9150)
OPB-111077
Niclosamide Topical (ATX 201)
INB03
Dimethylamino Micheliolide (ACT001)
OPB-31121
OPB-51602
Sulforadex (Sulforafan Alfadex)
TTI-101 Oral
Atiprimod (SK&F106615)
Niclosamide (DWRX2003)
Hl237
WP1066
Anatabine (RCP-006)
Golotimod (SCV 07)
Niclosamide (FW-1022)
Niclosamide Novel Solution
Propranolol
APX3330
PCUR-101
SCR430
WP1220
Curcumin
Luxeptinib (CG-806)
Natura-Alpha (TAK-114)
CO-Stirna (Cpg-STAT3siRNA)
DSP-0337
NT219
Niclonex (Niclosamide Suspension)
SBT-200
Homoharringtonine Derivative (BS-HH-002.SA)
Niclosamide Inhalation (UNI91104)
Pyrimethamine (GLG-801)
Clinical Activity and Developments of STAT3 Inhibitor:
Till June 2023, more than 45 companies having approximately 37 molecules targeting the 72 diseases. For these molecules, more than 59 clinical trials are being conducted and the majority are in phase-2, phase-3 clinical trials by the players across the globe. For instance,
Molecule Name |
Number of Studies |
Bardoxolone Methyl (RTA 402) |
37 |
Ivarmacitinib (SHR0302) |
26 |
Napabucasin (BBI608) |
26 |
Danvatirsen (AZD9150) |
14 |
OPB-111077 |
7 |
The molecules such as Rezurock (Belumosudil) developed by Kadmon for the line of treatment in patients of 12 years and older with chronic graft-versus-host disease. Ariad Pharmaceuticals Alunbrig (Brigatinib) is for the first-line treatment of adult patients with anaplastic lymphoma kinase-positive (ALK+) metastatic non-small cell lung cancer (NSCLC) as detected by an FDA-approved test. Moreover, Roche’s Alecensa (Alectinib) for the for the Treatment of ALK-positive, metastatic non-small cell lung cancer.
Zykadia (Ceritinib), Alecensa (Alectinib), Rezurock(Belumosudil), Alunbrig (Brigatinib)are the few FDA-approved STAT3 Inhibitor.
Total global annual sales of Roche’s Alecensa (Alectinib) was US$1,513 million in FY2022 with 11.6% growth compared to FY2021
Novartis, Roche, Kadmon, Ariad Pharmaceuticals, etc are a few leading market players in STAT3 Inhibitor.
Major Indications for STAT3 inhibitors are lymphoma, blood coagulation disorders, leukemia, sarcoma, hematologic diseases, glioblastoma, liver diseases, diabetes mellitus, gastroenteritis, hepatitis, etc
There are a total of 36 molecules that are in Phase-1, Phase-2, and Phase-3 clinical development.