be upregulated in left ventricles of heart failure patients. Studies in patients with amyotrophic lateral sclerosis, spinal muscular atrophy, and congenital myopathy, also found altered expression of CARP in skeletal muscle fibers. Another study in congenital muscular dystrophy and Duchenne muscular dystrophy patients showed elevated expression of CARP. CARP expression is also elevated in patients with lupus nephritis, and associates with proteinuria severity, suggesting that it may have biomarker potential. Interactions ANKRD1 has been shown to interact with: Titin, MYPN, YBX1, CASQ2, DES, TP53, TLN1, and FHL2. References External links Further reading Human proteins