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US FDA Continues Shift From Companion To Complementary PD-L1 Diagnostics With AstraZeneca Imfinzi Approval

 
• By Bridget Silverman

AstraZeneca's Imfinzi (durvalumab) is the third PD-1/L1 inhibitor approved for second-line bladder cancer with labeling that describes better response rates in patients with higher PD-L1 expression, but without a requirement for diagnostic testing.

Companion Diagnostics

FDA's approval of AstraZeneca PLC's Imfinzi (durvalumab) is the latest example of the agency's growing preference for complementary diagnostics over the companion diagnostic paradigm that dominated the early days of targeted therapy and immunotherapy for cancer.

While the indications for many targeted therapies and early immunotherapy approvals specified use of a companion diagnostic test, FDA has been moving toward a less prescriptive approach that describes clinical data organized by biomarker expression on a diagnostic

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FDLI: Clinical Labs Face Uncertainty After Texas Court’s LDT Ruling

 
• By Elizabeth Orr

A Texas court's decision against US FDA regulation of lab-developed tests (LDTs) has introduced new uncertainties for clinical labs. Industry stakeholders are now worried about potential future regulations while also managing existing compliance requirements. Recent conference discussions underscored the complexities of FDA oversight.

Data Finds Capillary Blood Is A Reliable Alternative To Venous Blood For Routine Testing

 
• By Natasha Barrow

A study from Babson Diagnostics published in the peer-reviewed Journal of Applied Laboratory Medicine showed that capillary blood sample volume issues can overcome historical challenges, such as poor quality, through a technique called assay miniaturization.

First Alzheimer’s Disease Diagnostic Blood Test Cleared By FDA

 
• By Natasha Barrow

Fujirebio Diagnostics' Alzheimer's disease test, Lumipulse G pTau217/ß-Amyloid 1-42 Plasma Ratio, has been cleared by the US FDA.

Mirvie Launches Predictive Blood Test For Preeclampsia

 
• By Marion Webb

Mirvie launched Encompass, a blood test to help identify women over age 35 who are at moderate risk for preeclampsia, and will conduct additional studies to support reimbursements from payers.

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Mirvie Launches Predictive Blood Test For Preeclampsia

 
• By Marion Webb

Mirvie launched Encompass, a blood test to help identify women over age 35 who are at moderate risk for preeclampsia, and will conduct additional studies to support reimbursements from payers.

SpotitEarly Raised $20.3M In New Funding To Bring AI- And Dog-Sniffing-Powered Early Cancer Detection Test To US

 
• By Marion Webb

Israeli-based SpotitEarly hopes to bring an early cancer-detection test, which uses dogs’ noses to detect compounds in exhaled breath and AI analysis, to US homes in 2026.

Danaher Faces $350M Tariff Hit, But Says It’s Ready To Absorb The Blow

 
• By Shubham Singh

Despite Danaher’s confident outlook, the company acknowledged near-term profitability fluctuations, particularly in the second quarter. Matt McGrew, Danaher’s CFO, clarified during the company’s first-quarter earnings call on 22 April, that expected operating margin softness in the second quarter – forecast at 25.5% – was not related to tariffs, but to seasonal dynamics in its respiratory diagnostics business.