The patient's hepatitis viral panel showed new reactive IgG and IgM antibodies to Hepatitis A. He was admitted to the gastroenterology service who obtained a radiology‐performed ultrasound that described the gallbladder as “edematous with wall thickening and striated appearance.” While inpatient, the patient was managed conservatively before being discharged. The gene discussed is CD40LG; the disease is hepatitis A virus infection.