Cellectis SA operates as a clinical stage biotechnological company, which engages in gene-editing platform to develop cell and gene therapies. The company is headquartered in Paris, Ile-De-France and currently employs 345 full-time employees. The company went IPO on 2007-02-06. The firm specializes in the research, development, and commercialization of rational genome engineering technologies. The firm develops immunotherapies that aim to force the immune system to target and eradicate cancer cells. The company has developed an expertise in combining meganucleases with engineered targeting Deoxyribonucleic Acid (DNA) matrices into Meganuclease Recombination Systems (MRS), used for gene excision, correction or replacement. Cellectis SA markets its technologies mainly for use in the research field, in pharmaceutical drug discovery programs, in the agronomics, bioproduction, and biotherapeutics fields. Cellectis SA operates several subsidiaries. The firm operates in France and the United States, among others.