How Investors Are Reacting To Guardant Health (GH) FDA Approval for New Breast Cancer Companion Test

Simply Wall St
  • Guardant Health announced that the U.S. FDA has approved its Guardant360 CDx as a companion diagnostic to identify patients with specific ESR1 mutations who may benefit from Eli Lilly's new advanced breast cancer therapy, Inluriyo.
  • This milestone marks the test’s sixth FDA companion diagnostic approval and its second for breast cancer, underscoring Guardant360 CDx's growing role in precision oncology and targeted cancer treatment selection.
  • We'll now examine how the FDA's approval of Guardant360 CDx for Inluriyo may shape Guardant Health's future investment outlook.

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Guardant Health Investment Narrative Recap

To own Guardant Health, you have to believe in the long-term expansion of precision oncology, where non-invasive blood-based diagnostics drive improved cancer care and clinical adoption. The FDA’s recent approval of Guardant360 CDx for Eli Lilly’s Inluriyo highlights continued regulatory traction for Guardant’s core platform but doesn’t materially shift the most important near-term catalyst: broad commercial and clinical payer adoption of Shield, especially for colorectal cancer. The single biggest risk remains cash burn and the pressure to reach profitability amid ongoing investment.

Among recent announcements, Guardant’s partnership with Quest Diagnostics to distribute Shield for colorectal cancer screening through a major US lab network is highly relevant. This advance aligns closely with the main catalyst of accelerating clinical uptake and payer coverage of Shield, which has the potential to meaningfully expand Guardant’s addressable market.

In contrast, investors should also be aware that Guardant’s high cash burn and persistent net losses mean that future dilution risk remains...

Read the full narrative on Guardant Health (it's free!)

Guardant Health's narrative projects $1.5 billion revenue and $82.1 million earnings by 2028. This requires 22.5% yearly revenue growth and a $495.9 million increase in earnings from -$413.8 million.

Uncover how Guardant Health's forecasts yield a $62.41 fair value, in line with its current price.

Exploring Other Perspectives

GH Community Fair Values as at Oct 2025

Three fair value estimates from the Simply Wall St Community range from US$62.41 to US$187.05 per share. Yet, with commercial Shield adoption still the main catalyst, your outlook on Guardant’s growth hinges on more than headline valuations, see how other investors weigh these factors.

Explore 3 other fair value estimates on Guardant Health - why the stock might be worth over 3x more than the current price!

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

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