NPPB and obesity due to melanocortin 4 receptor deficiency: There was no correlation of Δ troponin T, Δ troponin I, Δ sST2, and Δ NT-proBNP with comorbidities that could influence biomarker levels like age, renal function (creatinine levels), anemia (Hb levels), or obesity (body mass index, BMI levels) [18] before immunoadsorption therapy and at long-term follow-up (Supplementary Table S2).