Thesis

Street consensus, scenarios, merits, risks, and invalidation triggers

AI-assisted
Thesis Summary

Erasca is a high-potential, clinical-stage precision oncology company singularly focused on targeting the RAS/MAPK pathway. The company's lead asset, ERAS-0015 (a pan-RAS molecular glue), has demonstrated highly encouraging preliminary Phase 1 efficacy with a 62% objective response rate in RAS-driven G12X NSCLC and a favorable safety profile compared to competitors. While a major intellectual property dispute with Revolution Medicines and a clinical safety event (one patient death) caused a severe stock correction in late April 2026, the company's robust cash position of $408.5 million (runway into H2 2028) and recent clinical collaborations with Merck and Tango Therapeutics provide a strong foundation for recovery. At current levels, the risk/reward is highly attractive for long-term biotech investors.

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This section is the 12-month view: analyst targets and the probability-weighted scenarios built from them. The intrinsic value at the top of this page answers a different question: what the business is worth today.
Street view · analyst 12-month targets10 analysts · as of 18 Aug 2026
Low · most bearish analyst$20.00
Mean target$23.30
High · most bullish analyst$30.00
Our research · scenarios, merits, risks, and invalidation triggersResearch as of 18 Sep 2026
Scenarios · 12-month scenario targetsAnchored at research date
Bear CaseDownside scenario
$20.0020%

Revolution Medicines successfully obtains an injunction or unfavorable court ruling that halts or severely restricts the development of ERAS-0015. Alternatively, safety concerns escalate with additional severe pneumonitis cases, or ERAS-4001 fails to show meaningful clinical activity in its H2 2026 readout, forcing the company to rely on earlier-stage pipeline assets.

Base CaseCentral scenario
$23.3050%
Matches the consensus mean

ERAS-0015 continues to advance through monotherapy expansion and combination cohorts with manageable safety and consistent efficacy. The IP litigation with Revolution Medicines remains ongoing without near-term injunctions, allowing clinical development to proceed. ERAS-4001 demonstrates acceptable safety and initial efficacy in H2 2026, supporting a moderate valuation recovery.

Bull CaseUpside scenario
$30.0030%

ERAS-0015 is validated as a best-in-class pan-RAS molecular glue with superior tolerability (only 2% Grade 3+ rash) and high efficacy in combination trials with Keytruda and panitumumab. The IP dispute with Revolution Medicines is settled favorably or dismissed, and ERAS-4001 delivers strong monotherapy data in H2 2026, positioning Erasca as a premier partner in precision oncology.

Scenarios are anchored to street consensus at the research date, with our probabilities and rationale.

Key Investment Merits
  • Strong preliminary Phase 1 monotherapy data for ERAS-0015 showing a 62% ORR in RAS-driven G12X NSCLC and up to 75% in docetaxel-eligible patients.
  • Robust balance sheet with $408.5 million in cash and marketable securities, providing a runway into the second half of 2028.
  • Strategic clinical collaborations established with Merck (Keytruda combination) and Tango Therapeutics (vopimetostat combination) validating the pipeline's potential.
  • Differentiated pipeline with ERAS-4001 (pan-KRAS inhibitor) sparing HRAS and NRAS to potentially enable a wider therapeutic window.
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Key Investment Risks
  • Ongoing high-stakes intellectual property and trade secret litigation with competitor Revolution Medicines over ERAS-0015.
  • Clinical safety risks, highlighted by a treatment-related death (pneumonitis) in the AURORAS-1 trial.
  • Active securities class action lawsuits (e.g., Cheng v. Erasca) stemming from the late-April 2026 stock collapse.
  • High execution and binary clinical trial risk typical of early-stage, pre-revenue biotechnology companies.
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Thesis Invalidation Triggers
  1. A court-ordered preliminary injunction halting the development or commercialization of ERAS-0015.
  2. FDA clinical hold on the AURORAS-1 trial due to safety concerns or additional treatment-related deaths.
  3. Failure of ERAS-4001 to demonstrate clinical activity or acceptable safety in the H2 2026 BOREALIS-1 readout.
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All scenarios are estimates and subject to change. Past performance is not indicative of future results.

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AI-assisted, source-linked narrative; figures from company filings (SEC EDGAR) and market data. Dates shown per section. Not investment advice. Terms of Use.