Jaguar Health to Present October 17 at the Lytham Partners Fall 2023 Investor Conference and October 18 at the BIO Investor Forum - Seite 2

About the Phase 3 OnTarget Clinical Trial

The OnTarget study is a first-of-its-kind prophylactic clinical trial with a primary endpoint based on patient reported outcomes that address the highly neglected and unmet burden of CIOB, including specifically diarrhea/loose watery stools. This study is evaluating the benefit of crofelemer to prevent or substantially reduce the number of weekly loose and/or watery stools as a continuous measurement over the 12-week treatment period compared to placebo. By completing the targeted enrollment in stage 1, the OnTarget study has approximately 90% power to detect the difference in the incidence and severity of diarrhea between crofelemer and placebo.

The company's expectation is that the double-blind placebo-controlled OnTarget trial will provide evidence that CIOB associated with targeted cancer therapies is chronic, not acute, and impacts the patient's quality of life as well as their ability to remain on their cancer therapy regimens at proven doses for better outcomes. The OnTarget trial is evaluating the effectiveness of crofelemer's novel mechanism of action, intestinal chloride ion channel modulation, to mitigate or substantially reduce chronic cancer therapy-related diarrhea and other symptoms of CIOB.

About Chemotherapy-Induced Overactive Bowel (CIOB)

A significant proportion of patients undergoing cancer therapy experience chemotherapy-induced overactive bowel (CIOB) - which includes symptoms such as chronic debilitating diarrhea (loose and/or watery stools), urgency, and bowel incontinence. Diarrhea has the potential to cause dehydration, and worsen fatigue and non-adherence to treatment in this population. Novel "targeted cancer therapy" agents, such as epidermal growth factor receptor (EGFR) antibodies and tyrosine kinase inhibitors (TKIs), with or without cycle chemotherapy agents, may cause increased electrolyte and fluid content in the gut lumen, which results in passage of loose and/or watery stools (i.e., diarrhea). Diarrhea has been reported as one of the most common side effects of TKIs and may result in cancer therapy drug holidays or reductions from therapeutic dose, potentially impacting patient outcome. Diarrhea is also a common side effect of some approved CDK 4/6 inhibitors. Patients with cancer therapy-related diarrhea (CTD) are 40% more likely to discontinue their chemotherapy or targeted therapy than patients without CTD,¹ and the cost of care of CTD patients is estimated to be 2.9 times higher than for patients who are not experiencing CTD.²