CD38 and B-cell chronic lymphocytic leukemia: Furthermore, the frequency of CD38-positive CLL cells had a lower predictive ability (AUC 0.66; 95% CI 0.57–0.76, p = 0.0018) than all verified XAI populations TC0011 (AUC 0.76; 95% CI 0.68–0.84, p < 0.0001), T1C0016 (AUC 0.78; 95% CI 0.70–0.86, p < 0.0001), T2C0004 (AUC 0.69; 95% CI 0.58–0.80, p = 0.0002), and T2C0018 (AUC 0.73; 95% CI 0.63–0.82, p < 0.0001).