overexpressed
/ˌəʊv(ə)rɪkˈsprɛst/ /ˌəʊv(ə)rɛkˈsprɛst/adjective
1Expressed in an excessive or exaggerated way.
2 Genetics. Of a gene product: produced in abnormally large amounts.
Origin
1950s; earliest use found in Norman Mailer (1923–2007), novelist and journalist. From overexpress + -ed.