STK4 and hyperinsulinemic hypoglycemia, familial, 4: Additional clinical features in patients with STK4 deficiency include salt-losing tubulopathy, suggestive of an acquired Gitelman syndrome, immune complex glomerulonephritis, and Castleman-like disease [10], juvenile idiopathic arthritis [11], human beta-papillomavirus-associated epidermodysplasia verruciformis [11, 12], primary cardiac T cell lymphoma [6], and short stature [13].