Agilent and Quest Diagnostics to Collaborate on Lung Cancer Diagnostic

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Agilent will work with Quest Diagnostics to distribute the ctDx FIRST test.

Agilent and Quest Diagnostics entered into an agreement to expand access to the Agilent Resolution ctDx FIRST liquid biopsy next-generation sequencing (NGS) test. The ctDx FIRST is a single-site premarket approved test that is approved by FDA (1) as a companion diagnostic (CDx) to identify advanced non-small lung cancer (NSCLC) patients who may benefit from treatment with adagrasib (brand name Krazati). Adagrasib is a targeted treatment option for adult patients with KRASG12C-mutated locally advanced or metastatic NSCLC who have received at least one prior systemic therapy.

According to a Jan. 23, 2023 company press release, under the agreement, Quest will offer ctDx FIRST to healthcare providers in the United States seeking a minimally invasive liquid biopsy test option as a CDx for adagrasib. The test can be ordered online through Quest’s online connectivity platform, and healthcare providers may additionally direct patients to provide specimens at one of Quest’s 2100 patient service centers in the US.

“We are looking forward to the Quest Diagnostics alliance facilitating broad access to ctDx FIRST, our liquid biopsy solution,” said Paul Beresford, vice-president and general manager, Companion Diagnostics Division, Agilent, in the release. “This expands the testing options available for NSCLC patients as patients don’t always have tissue available for molecular analysis.”

"The addition of the ctDx FIRST test to our oncology menu underscores our commitment to providing access to precision medicine innovations to improve care for patients with cancer," said Kristie Dolan, vice-president and general manager, Oncology Franchise, Quest Diagnostics, in the release. "It also reflects our ability to optimize our national physician and patient access network to extend access to important medical innovations with the potential to improve patient outcomes."



1. FDA, “FDA Grants Accelerated Approval to Adagrasib for KRAS G12C-Mutated NSCLC,” Press Release, Dec. 12, 2022.

Source: Agilent