🧭 Guided View New to genetics? We explain every term as you browse, in plain English. Same pages, with the help built in.
⚡ Expert View You already know the biology. Just the content — clean and compact, no extra explanations. This is the default view.
Interface language
Light mode
Private company · Somerville, Massachusetts
Tessera Therapeutics
Developing 'gene writing' — mobile genetic elements repurposed to insert whole sequences rather than edit letters.
PreclinicalGene writing
In one paragraph
Tessera works on a different idea from most editing companies: rather than changing letters, insert whole working sequences using natural machinery that already moves DNA around. That would matter most for diseases where the gene is too large or the mutations too varied for letter-by-letter approaches.
Tessera Therapeutics, founded in 2018 by Flagship Pioneering, develops Gene Writing technology based on engineered retrotransposons and related mobile elements capable of inserting kilobase-scale sequence. Programmes span sickle cell disease, alpha-1 antitrypsin deficiency and phenylketonuria; the work remains preclinical.
Not investment advice
This profile is educational information compiled from public disclosures. It is not a recommendation to buy, sell or hold any security, and it is not a view on the company's prospects. Biotechnology is highly speculative and most clinical programmes fail.
Full disclaimers →
Written by The CRISPR Atlas editorial teamLast updated Aug 25, 2026
Connected in the Atlas
Every entry on this site is linked to the others it relates to. These connections are part of the record, not a search result.