Lassen Therapeutics Funding, Investors & Competitors

Lassen Therapeutics has raised $116M across 2 funding rounds, most recently a $85M Series B in December 2023.

Last Lassen Therapeutics funding round

$85M

Series B · Dec 2023

Cumulative funding Lassen Therapeutics raised

$116M

across 2 funding rounds

Key investors in Lassen Therapeutics

  • Alta Partners
  • Longitude Capital
  • Biotechnology Value Fund
  • Catalio Capital Management
  • Frazier Healthcare Partners
  • Longwood Fund
  • Frazier Life Sciences
  • Longwood Capital Partners

Lassen Therapeutics Overview

About Lassen Therapeutics

Lassen Therapeutics is a South San Francisco-headquartered clinical-stage biotech advancing antibodies against fibrotic diseases, oncology, and rare conditions. Lead asset LASN01, an anti-IL-11Rα monoclonal antibody, entered Phase 1 trials for systemic sclerosis and idiopathic pulmonary fibrosis. Additional programs target IL-11 signaling in pancreatic cancer stromal interactions, leveraging preclinical data showing reduced extracellular matrix deposition in lung and kidney models.


Founded

2018

HQ

United StatesSan Diego, CA

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Lassen Therapeutics Funding History

Lassen Therapeutics has raised a total of $116M across 2 funding rounds.

Lassen Therapeutics' first fundraising round was a $31M Series A in June 2020. The most recent completed round was a $85M Series B in December 2023.

Lassen Therapeutics funding rounds

Lassen Therapeutics funding rounds
DateStageInvestorsRaisedDeal Summary
Dec 2023Series BFrazier Life Sciences (lead); Longitude Capital (lead); Alta Partners; Biotechnology Value Fund; Catalio Capital Management; Longwood Capital Partners$85MLassen Therapeutics, a San Diego-based clinical-stage biotech company, develops first-in-class monoclonal antibodies targeting the interleukin-11 receptor (IL-11R) for fibro-inflammatory disorders such as thyroid eye disease (TED) and idiopathic pulmonary fibrosis (IPF), and oncology indications. The company closed an oversubscribed $85 million Series B financing on December 19, 2023, co-led by Frazier Life Sciences (existing investor from the $31 million Series A in 2020) and new investor Longitude Capital, with participation from new investors BVF Partners (Biotechnology Value Fund) and Catalio Capital Management, as well as existing investors Alta Partners and Longwood Capital Partners. This brings total funding to $116 million across Series A and B. Proceeds from the Series B will fund advancement of the lead program LASN01 through Phase 1 and 2 clinical trials, including development of a subcutaneous formulation, with the first patient dosed in a Phase 1 trial for TED. Preclinical data in orbital fibroblasts showed encouraging results, supporting differentiation from existing TED treatments like Tepezza, and the company plans to pursue TED first due to lower Phase 2 costs compared to IPF before expanding indications. CEO Maria Fardis highlighted the financing's role in executing pipeline programs efficiently. New board members include Brian Liu, M.D. from Longitude Capital and Matthew Hobson, Ph.D. from Catalio Capital Management. Investors expressed excitement over the novel target, first-in-class potential, and management's execution in fibro-inflammatory and cancer programs. Lassen operates with 26 employees and targets high-unmet-need markets, with the TED market valued at USD 1.9 billion in 2022 across 7MM and IPF at USD 3.1 billion in 2021, both projected to grow significantly.
Jun 2020Series AFrazier Healthcare Partners (lead); Alta Partners; Longwood Fund$31MLassen Therapeutics, a San Diego-based biotechnology company, emerged from stealth on June 17, 2020, with a $31 million Series A financing round led by Frazier Healthcare Partners and participation from Alta Partners and Longwood Fund. The funding supports the discovery and development of novel antibody therapeutics targeting fibrosis, rare diseases, and oncology, with the lead program LASN01, a monoclonal antibody against the interleukin-11 (IL-11) receptor, positioned as best-in-class for these indications. The company was formed as part of Frazier's company creation efforts, leveraging the firm's experience in seeding over 20 life sciences companies since 2005. Leadership includes CEO Mark Barrett, formerly an entrepreneur-in-residence at Frazier with business development experience at Sanofi Genzyme and Johnson & Johnson, and Chief Scientific Officer David King. Lassen has fewer than 10 employees at launch and is actively hiring, utilizing partnerships with CSL, Ltd., and FUJIFILM Diosynth Biotechnologies for rapid program advancement, including high-throughput cell culture for LASN01. Andrew Nash from CSL joined the scientific advisory board to support the anti-IL-11R program's continuation. Subsequent developments include forming a scientific advisory board in December 2020, appointing Maria Fardis as CEO in May 2023, presenting data at AACR in April 2023, and closing an oversubscribed $85 million Series B in December 2023 to fund Phase 2 studies of LASN01 in thyroid eye disease and IND-enabling studies for LASN500.

Who has invested in Lassen Therapeutics?

8 investors have backed Lassen Therapeutics across its funding rounds, including Alta Partners, Longitude Capital, Biotechnology Value Fund, Catalio Capital Management, Frazier Healthcare Partners and Longwood Fund.

Lead investors include Frazier Life Sciences, Longitude Capital and Frazier Healthcare Partners.


Lassen Therapeutics Investors

Investors in Lassen Therapeutics by funding rounds participated
InvestorHQRoundsRoleFirst check
Alta PartnersUnited StatesJackson, MS2ParticipantJun 2020
Longwood FundUnited StatesBoston, MA1ParticipantJun 2020
Biotechnology Value FundUnited StatesSan Francisco, CA1ParticipantDec 2023
Frazier Healthcare PartnersUnited StatesSeattle, WA1LeadJun 2020
Catalio Capital ManagementUnited StatesNew York City, NY1ParticipantDec 2023
Frazier Life SciencesUnited StatesSan Francisco, CA1LeadDec 2023

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Lassen Therapeutics Competitors

Lassen Therapeutics competitors include listed companies like Eli Lilly, Johnson & Johnson, AbbVie and Merck, and private ones like Biosplice Therapeutics and Biocon Biologics.

Public and private companies comparable to Lassen Therapeutics
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Eli LillyUnited StatesUnited StatesPublicly listed$65B$28B$1.0T13.1x
Johnson & JohnsonUnited StatesUnited StatesPublicly listed$94B$40B$651B6.8x
AbbVieUnited StatesUnited StatesPublicly listed$61B$17B$467B8.1x
MerckUnited StatesUnited StatesPublicly listed$65B$28B$363B6.2x
Biosplice TherapeuticsUnited StatesSan Diego, CAPrivate--$12B-
Biocon BiologicsIndiaBangalorePrivate$1.1B-$4.5B4.2x

Lassen Therapeutics Public Comps

Lassen Therapeutics is still privately-owned, but its public comps include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Roche, Novartis, AstraZeneca, Amgen, Novo Nordisk and Gilead Sciences.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
Eli Lilly$65B$28B16.5x13.1x38.7x27.0x
Johnson & Johnson$94B$40B7.2x6.8x17.0x18.3x
AbbVie$61B$17B8.7x8.1x30.6x17.6x
Merck$65B$28B6.3x6.2x14.7x21.0x
Roche$77B$26B5.0x4.9x14.6x12.4x
Novartis$57B$22B5.5x5.5x14.2x13.3x
AstraZeneca$59B$19B4.8x4.5x14.6x12.7x
Amgen$37B$17B6.8x6.5x14.8x14.4x

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Common questions about Lassen Therapeutics

When was Lassen Therapeutics founded?Lassen Therapeutics was founded in 2018.
Where is Lassen Therapeutics headquartered?Lassen Therapeutics is headquartered in San Diego, CA, United States.
Is Lassen Therapeutics publicly listed?No, Lassen Therapeutics is a private, VC-backed company.
How much funding has Lassen Therapeutics raised?Lassen Therapeutics has raised $116M across 2 funding rounds.
What was Lassen Therapeutics' last funding round?Lassen Therapeutics' last funding round was a $85M Series B in December 2023, led by Frazier Life Sciences and Longitude Capital.
Who are Lassen Therapeutics' investors?Lassen Therapeutics' investors include Alta Partners, Longwood Fund, Biotechnology Value Fund, Frazier Healthcare Partners, Catalio Capital Management, Frazier Life Sciences, Longwood Capital Partners and Longitude Capital.
Which companies are comparable to Lassen Therapeutics?Companies comparable to Lassen Therapeutics include Eli Lilly, Johnson & Johnson, AbbVie, Merck, Biosplice Therapeutics and Biocon Biologics.

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