ISA-201 is under clinical development by ISA Pharmaceuticals and currently in Phase II for Head And Neck Cancer. According to GlobalData, Phase II drugs for Head And Neck Cancer have a 27% phase transition success rate (PTSR) indication benchmark for progressing into Phase III. GlobalData’s report assesses how ISA-201’s drug-specific PTSR and Likelihood of Approval (LoA) scores compare to the indication benchmarks. Buy the report here.

GlobalData tracks drug-specific phase transition and likelihood of approval scores, in addition to indication benchmarks based off 18 years of historical drug development data. Attributes of the drug, company and its clinical trials play a fundamental role in drug-specific PTSR and likelihood of approval.

ISA-201 overview

ISA-201 (SLP-Amplivant conjugate) is under development for the treatment of human papilloma virus (HPV)-positive head and neck cancer,  oropharyngeal cancer and cervical cancer. The vaccine candidate is administered intradermally. The drug candidate is a conjugate of two HPV16 E6 Synthetic Long Peptides (SLPs) covalently linked to AMPLIVANT (a synthetic Toll-like receptor (TLR) 1/2 ligand).

ISA Pharmaceuticals overview

ISA Pharmaceuticals is a developer of synthetic therapeutic vaccines for the treatment of cancer and persistent viral infections. The company’s pipeline products include ISA101, an immunotherapeutic vaccine for cervical cancer, MyISA, a personalized immunotherapy based on neoantigens to eradicate cancer; ISA203, preferentially expressed antigen in melanoma for treating different types of cancers; and ISA204 for the treatment of hepatitis B. It also develops synthetic long peptides technology used in the applications of viral and non-viral targets and provides multiple products for persistent virus infections. The company also provides amplivant technology, which is based on a proprietary and synthetic toll-like receptor agonist and is used in new generation immunotherapeutic for treating various diseases. ISA Pharmaceuticals is headquartered in Leiden, the Netherlands.

For a complete picture of ISA-201’s drug-specific PTSR and LoA scores, buy the report here.


GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData’s Likelihood of Approval analytics tool dynamically assesses and predicts how likely a drug will move to the next stage in its clinical pathway (PTSR), as well as how likely the drug will be approved (LoA). This is based on a proprietary algorithm built from the drugs’ sales forecast, regulatory milestones, cost forecasts, WACC rate and other proprietary data sources found on GlobalData’s Pharmaceutical Intelligence Center.