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Soufflé Therapeutics

Biotech & Life Sciences · Boston, United States · Founded 2022

Targeted siRNA medicines for genetic and autoimmune diseases MoreLess

Soufflé Therapeutics is a biotechnology company founded in 2022 that develops targeted, tissue-specific genetic therapies. The firm's platform discovers new cell proteins and pathways to deliver genetic payloads, specifically small interfering RNA (siRNA) medicines, to designated cells. This approach enables the treatment of various autoimmune and cardiac diseases by targeting macrophages and cardiac cells. The company's initial programs focus on facioscapulohumeral muscular dystrophy (FSHD) and cardiomyopathies caused by mutations in the phospholamban (PLN) gene, with clinical trials anticipated to start in 2026.

The company was co-founded by a team of prominent figures in genetic medicine, including Robert Langer (co-founder of Moderna), Daniel Anderson, and Victor Kotelianski, who previously served as the founding SVP of research at Alnylam. The leadership team includes CEO Amir Nashat, a former Managing Partner at Polaris Partners, and Founding President and Chief Business Officer Susan Langer, who has held leadership roles at Biogen, Paratus Sciences, and Kojin Therapeutics. The company operates on a business model that involves collaborations with pharmaceutical companies and strategic venture capital investors. Soufflé has secured significant capital through these partnerships and funding rounds. As a privately held, venture-capital-backed entity, the company has raised funds from investors such as Vida Ventures, ARCH Venture Partners, Polaris Partners, Safar Partners, and Bessemer Venture Partners.

Keywords: genetic medicine, siRNA therapeutics, targeted drug delivery, gene therapy, autoimmune diseases, cardiac diseases, FSHD, PLN gene mutation, cardiomyocyte targeting, macrophage targeting, Robert Langer, Amir Nashat, Susan Langer, Victor Kotelianski, Polaris Partners, ARCH Venture Partners, Vida Ventures, biotechnology, pharmaceutical research, genetic payloads

Company overview

Soufflé Therapeutics company information

The essential company record, classifications and operating signals in one place.

Status
Operational
Founded
2022
Headquarters
Boston, United States
Employees
85
Open positions
3
Dealroom signal
53.1
sub industryBioTechnologybusiness modelManufacturingindustryHealthsectorDrug DevelopmentsectorCardiology and cardiovascularsectorGenetics and genomicssectorAutoimmunesectorGene TherapysectorRNAsectorSpinoutsectorRumoured $1BsectorDT and LSsectorscience-basedclient focusb2b

Valuation & funding

Soufflé Therapeutics funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SEEDOther financing Oct 2025 $200M $800M Invus · Novo Nordisk · AbbVie · Vida Ventures
SPINOUTOther financing Jan 2022 $0 Massachusetts Institute of Technology
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Growth signals

Soufflé Therapeutics website traffic

Latest recorded traffic for Soufflé Therapeutics is 3.1K monthly website visits, up 6.9% over the last three months. Soufflé Therapeutics's team grew 25% over the past year.

Latest monthly visits3.1K 3-month web change+6.9% 1-year team growth+25%
Monthly website visits10 observations · Oct 2025–Jul 2026
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Comparisons

Soufflé Therapeutics compared with similar companies

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Talent graph

Soufflé Therapeutics's talent

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Employees 85 total headcount
Founders Hidden — book a demo/100 quality score
Key operators Hidden — book a demo quality score
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

13 investors on Soufflé Therapeutics's cap table

Sourced from Dealroom's funding and investor records. Investor profile links are shown where available.

Seed 12 investors entered at this stage
Invus
Novo Nordisk
AbbVie
Vida Ventures
Breyer Capital
Bessemer Venture Partners
Polaris Partners
Temasek
ARCH Venture Partners
Amgen
Bayer
Safar Partners
Other known 1 additional known investor
Massachusetts Institute of Technology

Global footprint

Where Soufflé Therapeutics has talent and traffic

Workforce by country
2 countries with
team presence
🇺🇸 United States93.1%
🇩🇪 Germany6.9%
2 countries shown

In the news

Latest news about Soufflé Therapeutics

Recent press, funding announcements, and product moves mentioning Soufflé Therapeutics — open to read from the original sources.

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Market sentiment

What the market is saying about Soufflé Therapeutics

An AI-synthesized read of the highest-engagement posts about Soufflé Therapeutics on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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