ALB and obesity due to melanocortin 4 receptor deficiency: Inchildren with obesity, a strong correlation between α1-AGP1and urinary albumin-to-creatinine ratio was also found, suggestingthat high levels of α1-AGP1 before the onset of albuminuriamay be useful as a biomarker of early glomerular damage. Bone marrow proteoglycan abundance was alsofound to increase 2 years postsurgery.