Human Genes: PECAM1 gene (Platelet and endothelial cell adhesion molecule1 gene)CXCR4 gene (Motif chemokine receptor 4 gene)ICAM1 gene (Intercellular adhesion molecule 1 gene)ITGB1 gene (Integrin subunit beta 1 gene)HFN1A gene, have been found in INVERTEBRATES and especially in ECHINODERMATA. They are genes from cells showing the antigen. Its highly important as discovery. They make the Echinodermata resembling human.We recall the existence of IPA: Invertebrate primitive antibody in these same Echinodermata which are Asterids, Ophuirids and Crino ds. 2 other classes (The Echinids, the Holothurids) don't show such genes.