Richard W. McCallum
Texas Tech University Health Sciences Center, Texas Tech University
Papers
3
Total Citations
83
H-Index
3
About
Richard W. McCallum is a leading authority in gastroenterology, with a research focus on gastroparesis, gastroesophageal reflux disease (GERD), and systemic sclerosis (SSc). His major contributions center on developing and evaluating advanced therapeutic interventions for complex motility disorders. Notably, his work on the long-term efficacy and safety of pyloroplasty combined with gastric electrical stimulation therapy for gastroparesis, cited 72 times, has provided critical evidence for a combined surgical and neuromodulatory approach to managing this debilitating condition. McCallum has also pioneered the use of robotic Dor fundoplication for severe GERD in scleroderma patients, addressing the unique challenges of esophageal atrophy and fibrosis, with his research highlighting the high prevalence of nocturnal reflux and aspiration risk in this population. Additionally, his investigation into TZP-102, a ghrelin agonist, demonstrated significant correlations between symptom improvement—including nausea, early satiety, bloating, and abdominal pain—and patient-rated overall treatment effect, advancing the understanding of pharmacologic options for gastroparesis. Through these impactful studies, McCallum has shaped clinical strategies for refractory gastrointestinal disorders, improving patient outcomes and quality of life.
Research Focus
Key Achievements
Top Papers
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