• Written informed consent and HIPAA authorization for release of personal health information prior to registration. NOTE: HIPAA authorization may be included in the informed consent or obtained separately.

• Age ≥ 18 years at the time of consent.

• Subjects suspected of or diagnosed with Stage IV/metastatic NSCLC and meet one of the following criteria:

‣ Subjects who are undiagnosed, have undergone imaging and are suspected to have Stage IV lung cancer.

⁃ Subjects with a previous Stage I, II, or III diagnosis of NSCLC, who are being re-biopsied due to suspected progression to metastatic disease.

⁃ Subjects who have a newly confirmed diagnosis of Stage IV NSCLC, have undergone a SOC biopsy procedure and will undergo a separate procedure for the purposes of this study prior to starting first line treatment.

⁃ Subjects who have a previous Stage IV/metastatic NSCLC diagnosis and have already received first line treatment.

• Subjects must be clinically able, at investigator discretion, to undergo additional CNB or forceps biopsy passes during their biopsy. These additional biopsies may either be collected from the primary tumor or a metastatic site amenable to additional passes (e.g., liver or lymph nodes) per the clinician.

• Subjects who are newly diagnosed or have suspected cancer must be treatment-naïve at the time of biopsy. All other subjects should have the biopsy performed before starting their next line of treatment.