Company: PHAT
Filing Date: 2025-03-06
Form Type: 10-K
Source: 0000950170-25-034183
Chunk: 15

Company: Phathom Pharmaceuticals, Inc.
Filing Date: 2025-03-06
Form: 10-K
Item: Item 1
Chunk 15
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 the value to physicians and patients of even incremental improvements over other PPIs. 

History of Pharmaceutical Agents for Control of Gastric Acid

PPI Limitations 

While PPIs provide clinically meaningful symptom relief and healing for millions of patients suffering from acid-related GI diseases, they are inadequate for many patients. The suboptimal anti-secretory profile of PPIs results in slow onset of symptom relief, breakthrough nighttime or postprandial heartburn, and treatment failure. A recent population-based survey with over 70,000 participants in the United States showed that 55% of patients who reported having GERD symptoms were taking PPIs, with 68% taking them daily, and 54% of those daily PPI users reporting persistent symptoms. This is consistent with earlier studies that have shown that approximately 15% to 45% of GERD patients are inadequately treated with PPIs, experiencing persistent, troublesome symptoms, such as heartburn and regurgitation. In approximately two-thirds of symptomatic GERD patients, reflux symptoms are not adequately controlled after the first dose of a PPI, and nearly 50% of patients still suffer from symptoms three days later. Given these limitations, more than 20% of GERD patients on PPI therapy take their PPI twice daily, which is not FDA approved, or purchase OTC heartburn treatments in addition to their prescription medicine. In a survey of approximately 1,000 GERD patients and 1,000 physicians, approximately one third of GERD patients reported persistent symptoms and were dissatisfied with PPI therapy and 35% of physicians perceived patients as somewhat satisfied to completely dissatisfied with PPI treatment. In addition, in a real world study conducted in 2020 and 2021 evaluating the perspectives and unmet needs of over 400 physicians and patients in the U.S. in the management of acid related disorders, fewer than one-third of the physician participants were satisfied with current treatment options for their patients. Moreover, fewer than 50% of patients in the study reported they were satisfied with their current treatment. 

In patients with more severe grades of Erosive GERD, studies with PPIs have reported failure rates of healing of esophageal erosions exceeding 25%. Additionally, recurrence of erosions is common in healed Erosive GERD patients receiving maintenance PPI therapy. One study reported recurrence in 15% to 23% of patients with less severe Erosive GERD and 24% to 41