LAMA3 and psoriasis: Toti and co-workers reported decreased laminin α2 chain and normal laminin α1, β1 and γ1 chains in psoriatic lesions [55], while Natsumi and co-workers reported increased laminin-332 (laminin α3, β3 and γ2; also known as laminin 5) and laminin-511 (laminin α5, β1 and γ1; also known as laminin 10) in psoriasis [22].