Using a mouse protein–protein interaction database (STRING, www.string-db.org) [17], we showed that collagen 24α1 interacts with Col1α1, Col1α2, Col2α1, Col3α1 and Col5α2 (Figure 2), therefore providing evidence for how collagen 24α1 may be associated with insulin resistance. The gene discussed is COL1A2; the disease is Insulin resistance.