A Phase 3 interventional study of Neladalkib (NVL-655) and Alectinib in Non-small Cell Lung Cancer and Anaplastic Lymphoma Kinase-positive, sponsored by Nuvalent Inc.. Recruiting at 159 sites in 29 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-30.
Sponsored by Nuvalent Inc. · Phase 3, Interventional, and Treatment
Multicenter, randomized, controlled, open-label, Phase 3 study designed to demonstrate that neladalkib (NVL-655) is superior to alectinib in prolonging progression-free survival (PFS) in patients with treatment-naïve, Anaplastic Lymphoma Kinase (ALK) positive, advanced Non-Small Cell Lung Cancer (NSCLC).
Patients will be randomized in a 1:1 ratio (approximately 225 in each arm) to receive either neladalkib (NVL-655) or alectinib.
7,620 studies on the registry are indexed under Carcinoma, Non-Small-Cell Lung; 1,838 are open to participants now.
This study's planned enrollment of 450 is above the median of 62 across 6,019 interventional studies indexed under Carcinoma, Non-Small-Cell Lung.
Browse Carcinoma, Non-Small-Cell Lung studies →Nuvalent Inc. is the lead sponsor of 6 studies on the registry; 6 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.
“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).
Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Histologically or cytologically confirmed
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Metastases
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Adjuvant and neoadjuvant
Neoadjuvant treatment is given before the main treatment (usually surgery), often to shrink a tumour. Adjuvant treatment is given after it, to lower the chance of the cancer coming back.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Measurable disease
The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.
The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
RECIST
The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.
“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Excipients
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hepatitis B tests
Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.
Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
QT and QTc
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Brain metastases
Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).
Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
150mg taken orally once daily (QD)
Drug: Neladalkib (NVL-655)
600mg taken orally twice daily (BID)
Drug: Alectinib
Oral tablet of Neladalkib (NVL-655)
Oral capsule of alectinib
Also known as: Alecensa
Progression-free survival (PFS) per blinded independent central review (BICR)
Time from randomization to BICR-assessed radiographic disease progression or death
Time frame: Up to 5 years after first patient dosed
Overall survival (OS)
Time from randomization to death
Time frame: Up to 5 years after first patient dosed
Progression-free survival (PFS) per investigator assessment
Time from randomization to investigator-assessed radiographic disease progression or death
Time frame: Up to 5 years after first patient dosed
Time to intracranial progression per BICR
Time from randomization to the first BICR-assessed occurrence of disease progression in the central nervous system (CNS)
Time frame: Up to 5 years after first patient dosed
Intracranial objective response rate (IC-ORR)
Proportion of patients with a confirmed intracranial response (intracranial complete response \[IC-CR\] or intracranial partial response \[IC-PR\]) among patients with measurable CNS disease at baseline
Time frame: Up to 5 years after first patient dosed
Intracranial duration of response (IC-DOR)
Time from first intracranial response (IC-CR or IC-PR) to radiographic intracranial disease progression or death
Time frame: Up to 5 years after first patient dosed
Objective response rate (ORR)
Proportion of patients with a complete response or partial response
Time frame: Up to 5 years after first patient dosed
Duration of response (DOR)
Time from first response (complete or partial) to radiographic disease progression or death
Time frame: Up to 5 years after first patient dosed
Intracranial progression per investigator assessment
Time to investigator-assessed intracranial progression
Time frame: Up to 5 years after first patient dosed
Treatment-emergent adverse events (TEAEs) and changes in clinically relevant laboratory parameters
Incidence and severity of TEAEs and changes in clinically relevant laboratory parameters
Time frame: Up to 5 years after first patient dosed
Patient-reported measures in health-related quality of life (QoL)
Changes in patient-reported outcomes (PROs) assessed by the European Organization for Research and Treatment of Cancer QoL core questionnaire - Cancer (EORTC QLQ-C30)
Time frame: Up to 5 years after first patient dosed
Patient-reported measures in lung cancer symptoms and side effects of treatment
Changes in PROs assessed by the European Organization for Research and Treatment of Cancer QoL - Lung Cancer module (EORTC QLQ-LC29)
Time frame: Up to 5 years after first patient dosed
Patient-reported measures in patient functioning
Changes in PROs assessed by the European Quality of Life (EuroQol) 5-dimension questionnaire (EQ-5D-5L)
Time frame: Up to 5 years after first patient dosed
Not enrolling at this site — choose another above.
Showing the first 100 of 159 sites across 29 countries. Choose a country and city above to see the rest.
Started Jul 2025 (actual). Primary completion is estimated for Dec 2029, 53 months after the start.
Of 314 industry-sponsored phase 3 interventional studies under Carcinoma, Non-Small-Cell Lung, half reached primary completion within 39 months of starting (the median), counting those still running; a quarter within 27 and three quarters within 57. This study's planned 53 months is above that.
Counting every sponsor, half of 423 studies reached it within 45 months; a quarter within 30 and three quarters within 69.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
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Carcinoma, Non-Small-Cell Lung →
Nuvalent Inc.