CALR and distal renal tubular acidosis: In the subsequent evaluation, regarding the dRTA etiology, the Schirmer test was positive in both eyes, with high titers of anti-SSA/Ro> 240.0 U/mL (normal <7.0 U/mL), anti- SSB/La > 320 U/mL (normal <7.0 U/mL) and antinuclear antibody (ANF), dotted nuclear pattern> 1: 640.