A 28-year-old man presents to the emergency room complaining of shortness of breath and coughing up bright red blood. He reports several months of dry cough and fatigue. On examination, blood pressure is 150/98 mmHg, and respiratory rate is 28/min. Laboratory examination is remarkable for a BUN of 30 mg/dL and creatinine of 2.9 mg/dL. Kidney biopsy confirms the diagnosis. Which of the following human leukocyte antigens (HLA) is most strongly associated with this patient's disease?
A. HLA-DR2
B. HLA-DR3
C. HLA-DR4
D. HLA-DR5
E. HLA-DR7
A. HLA-DR2
B. HLA-DR3
C. HLA-DR4
D. HLA-DR5
E. HLA-DR7