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Non-small Cell Lung CancerPhase 2NCT05546866

Study to Assess the Efficacy and Safety of Adjuvant Osimertinib in NSCLC With Uncommon EGFRm

A Phase 2 study testing Osimertinib in people with Non-small Cell Lung Cancer, run by AstraZeneca at 10 sites in China.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

This is an open-label, multi-centre, single-arm study assessing the efficacy and safety of osimertinib as adjuvant treatment in stage IB-IIIB (8th AJCC) NSCLC with uncommon EGFRm after receiving complete surgical resection with or without adjuvant chemotherapy. Read more about this study

Who is it for?
Ages 18 to 130 years
Conditions the study is for
Non-small Cell Lung Cancer
What is being tested?
Osimertinib
Could I receive a placebo?
No, everyone receives an active treatment
How many people
51 participants
Where
10 sitesChina
Study dates
9 Feb 2023to 30 Jun 2029
Phase
Phase 2
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 130 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Provision of informed consent prior to any study specific procedures, sampling, and analyses.
  • Male or female, aged at least 18 years.
  • Histologically confirmed diagnosis of primary non-small cell lung cancer (NSCLC) on predominantly non-squamous histology.
  • MRI or CT scan of the brain must be done prior to surgery as it is considered standard of care. Patients in whom this was not done prior to surgery may still be enrolled if appropriate imaging is performed prior to enrollment.
  • Patients must be classified post-operatively as Stage IB, II, IIIA, or IIIB on the basis of pathologic criteria. Staging will be according to the 8th edition of AJCC Cancer Staging Manual.
  • At least one documented uncommon EGFR mutation of G719X/L861Q/S768I/de novo T790M without EGFR Ex19del/L858R/exon 20 insertion as detected in tumour tissue, through real-time PCR or NGS analysis from accredited laboratories approved by the Chinese regulatory authority.
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  • Complete surgical resection of the primary NSCLC is mandatory. All gross disease must have been removed at the end of surgery. All surgical margins of resection must be negative for tumour. Resection may be accomplished by open or Video Associated Thoracic Surgery (VATS) techniques.
  • Complete recovery from surgery and standard post-operative therapy (if applicable) at the time of enrollment. Treatment cannot commence within 4 weeks following surgery. No more than 10 weeks may have elapsed between surgery and the enrollment for patients who have not received adjuvant chemotherapy; no more than 26 weeks may have elapsed between surgery and enrollment for patients who received adjuvant chemotherapy.
  • Complete post-operative wound healing must have occurred following any surgery.
  • For patients who received post-operative adjuvant platinum-based chemotherapy, a minimum of 2 weeks must have elapsed (but no more than 10 weeks) from the last administered dose of chemotherapy to the date of enrollment.
  • Patients must have recovered from all toxicities of prior therapy greater than CTCAE Grade 1 at the time of starting study treatment with the exception of alopecia and Grade 2 prior platinum therapy related neuropathy.
  • World Health Organization Performance Status of 0 to 1.
  • Females must be using highly effective contraceptive measures, and must have a negative pregnancy test prior to start of dosing if of child-bearing potential, or must have evidence of non-child-bearing potential by fulfilling one of the following criteria at screening:
  • Post-menopausal defined as aged more than 50 years and amenorrheic for at least 12 months following cessation of all exogenous hormonal treatments.
  • Women less than 50 years old would be consider postmenopausal if they have been amenorrheic for 12 months or more following cessation of exogenous hormonal treatments and with luteinizing hormone (LH) and follicle-stimulating hormone (FSH) levels in the post-menopausal range for the institution.
  • Documentation of irreversible surgical sterilisation by hysterectomy, bilateral oophorectomy, or bilateral salpingectomy but not tubal ligation.
  • Further information in Appendix D (Definition of Women of Childbearing Potential and Acceptable Contraceptive Methods) Male patients must be willing to use barrier contraception, (see Restrictions, Section 5.3).
  • For inclusion in the optional part in molecular research study, patients must provide informed consent for the optional analysis.
  • If a patient declines to participate in any voluntary exploratory research of the study, there will be no penalty or loss of benefit to the patient and he/she will not be excluded from other aspects of the study.

Who cannot join

  • Previous enrollment and treatment in the present study.
  • Participation in another clinical study with a study intervention or investigational medicinal device administered in the last 8 weeks prior to enrollment, or concurrent enrollment and exposure in another clinical study, unless it is an observational (non-interventional) clinical study or during the follow-up period of an interventional study.
  • Treatment with any of the following:
  • Pre-operative or post-operative or planned radiation therapy for the current lung cancer.
  • Pre-operative (neo-adjuvant) platinum based or other chemotherapy.
  • Any prior anticancer therapy, including investigational therapy, for treatment of NSCLC other than standard platinum based doublet post-operative adjuvant chemotherapy.
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  • Prior treatment with neoadjuvant or adjuvant EGFR-TKI.
  • Major surgery (including primary tumour surgery, excluding placement of vascular access) within 4 weeks of the first dose of study drug.
  • Patients currently receiving (or unable to stop use prior to receiving the first dose of study treatment) medications or herbal supplements known to be potent inducers of CYP3A4 (at least 3 week prior) (Appendix F). All patients must try to avoid concomitant use of any medications, herbal supplements and/or ingestion of foods with known inducer effects on CYP3A4.
  • Treatment with an investigational drug within five half-lives of the compound or any of its related material, if known.
  • Patients who have had only segmentectomies or wedge resections.
  • History of other malignancies, except: adequately treated non-melanoma skin cancer, curatively treated in-situ cancer, or other solid tumours curatively treated with no evidence of disease for > 5 years following the end of treatment and which, in the opinion of the treating physician, do not have a substantial risk of recurrence of the prior malignancy.
  • Any evidence of severe or uncontrolled systemic diseases, including uncontrolled hypertension and active bleeding diatheses, which in the Investigator's opinion makes it undesirable for the patient to participate in the trial or which would jeopardise compliance with the protocol; or active infection including hepatitis B, hepatitis C and human immunodeficiency virus (HIV).
  • Screening for chronic conditions is not required.
  • Active infection will include any patients receiving treatment for infection.
  • Subjects with a resolved or chronic infection HBV are eligible if they are:
  • Negative for HBsAg and positive for hepatitis B core antibody [anti-HBc IgG] or
  • Positive for HBsAg, negative for HBeAg but for > 6 months have had transaminases levels below ULN and HBV DNA levels ≤ 100 IU/mL (i.e., are in an inactive carrier state). Refer to Restrictions, Section 5.3.
  • Refractory nausea and vomiting, chronic gastrointestinal diseases, inability to swallow the formulated product, or previous significant bowel resection that would preclude adequate absorption of osimertinib.
  • Any of the following cardiac criteria:
  • Mean resting corrected QT interval (QTc) >470 msec, obtained from 3 ECGs, using the screening clinic ECG machine-derived QTcF value.
  • Any clinically important abnormalities in rhythm, conduction, or morphology of resting ECG, e.g., complete left bundle branch block, third-degree heart block, second-degree heart block.
  • Patient with any factors that increase the risk of QTc prolongation or risk of arrhythmic events such as electrolyte abnormalities* including:
  • Serum/plasma potassium < LLN
  • Serum/plasma magnesium < LLN
  • Serum/plasma calcium < LLN heart failure, congenital long QT syndrome, family history of long QT syndrome, or unexplained sudden death under 40 years of age in first-degree relatives or any concomitant medication known to prolong the QT interval and cause Torsades de Pointes (TdP) .
  • Note: Correction of electrolyte abnormalities to within normal ranges can be performed during the screening period.
  • Past medical history of ILD, drug-induced ILD, radiation pneumonitis which required steroid treatment, or any evidence of clinically active ILD.
  • Inadequate bone marrow reserve or organ function as demonstrated by any of the following laboratory values:
  • Absolute neutrophil count <1.5 × 109/L.
  • Platelet count <100 × 109/L.
  • Haemoglobin <90 g/L.
  • Alanine aminotransferase (ALT) >2.5× the upper limit of normal (ULN).
  • Aspartate aminotransferase (AST) >2.5 × ULN.
  • Total bilirubin >1.5 × ULN or >3 × ULN in the presence of documented Gilbert's Syndrome (unconjugated hyperbilirubinaemia).
  • Creatinine >1.5 × ULN concurrent with creatinine clearance <50 mL/min (measured or calculated by Cockcroft and Gault equation); confirmation of creatinine clearance is only required when creatinine is >1.5 × ULN.
  • History of hypersensitivity to active or inactive excipients of osimertinib or drugs with a similar chemical structure or class to osimertinib.
  • Judgment by the Investigator that the patient should not participate in the study if the patient is unlikely to comply with study procedures, restrictions, and requirements.
  • Involvement in the planning and/or conduct of the study (applies to both AstraZeneca representative and/or staff at the study site).
  • Currently pregnant (confirmed with positive pregnancy test) or breast feeding.
  • In addition, the following are considered criteria for exclusion from the exploratory molecular research only:
  • Prior allogeneic bone marrow transplant.
  • Non-leukocyte depleted whole blood transfusion within 120 days of sample collection.

Trial locations and contacts

10 sites in 1 country.

10 sites in 1 country

China10 sites
  • Research Site

    Beijing, 100730

  • Research Site

    Chengdu, 610000

  • Research Site

    Chengdu, 610041

  • Research Site

    Fuzhou, 350011

  • Research Site

    Guangzhou, 510080

  • Research Site

    Kunming, 650118

  • Research Site

    Ningbo, 315010

  • Research Site

    Shijiazhuang, 050051

  • Research Site

    Suzhou, 215006

  • Research Site

    Tianjin, 300060

Other trials in China

About this study

Official title: An Open-label, Prospective, Multi-center, Single-arm Study to Assess the Efficacy and Safety of Adjuvant Osimertinib in Non-small Cell Lung Cancer (NSCLC) With Uncommon Epidermal Growth Factor Receptor Mutations (EGFRm)

This is an open-label, multi-centre, single-arm study assessing the efficacy and safety of osimertinib as adjuvant treatment in stage IB-IIIB (8th AJCC) NSCLC with uncommon EGFRm after receiving complete surgical resection with or without adjuvant chemotherapy.

Being tested
Osimertinib
Medical subject headings
Carcinoma, Non-Small-Cell Lung

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • OsimertinibDrug

    Subjects successfully enrolled into the study will receive 80mg osimertinib QD p.o. until completion of planned treatment duration, recurrence of disease, or other treatment discontinuation criteria is met. The maximum treatment duration period is 3 years.

Study groups in NCT05546866
Study groupRoleWhat they receive
OsimertinibExperimentalSubjects successfully enrolled into the study will receive 80mg osimertinib QD p.o. until completion of planned treatment duration, recurrence of disease, or other treatment discontinuation criteria is met. The maximum treatment duration period is 3 years.
Receives: Drug: Osimertinib

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. 3-year disease-free survival (DFS) rate by investigator assessment

    DFS is defined as the time from the first dosing of study treatment until the date of disease recurrence by investigator assessment or death by any cause in the absence of disease recurrence. DFS rate at 3 years is defined as the proportion of patients alive and disease free at 3 years from the first dosing of study treatment as estimated by Kaplan-Meier method, respectively. Patients who are disease-free and alive at the time of analysis will be censored at the date of their latest follow-up assessment known to be disease-free

    Measured: Up to 3 years for each subject from the first dosing of study treatment.

Secondary outcomes (8)
  1. DFS rate at 2 years

    DFS is defined as the time from the first dosing of study treatment until the date of disease recurrence by investigator assessment or death by any cause in the absence of disease recurrence. DFS rate at 2 years is defined as the proportion of patients alive and disease free at 2 years from the first dosing of study treatment as estimated by Kaplan-Meier method, respectively. Patients who are disease-free and alive at the time of analysis will be censored at the date of their latest follow-up assessment known to be disease-free.

    Measured: Up to 2 years for each subject from the first dosing of study treatment.

  2. DFS rate at 5 years

    DFS is defined as the time from the first dosing of study treatment until the date of disease recurrence by investigator assessment or death by any cause in the absence of disease recurrence. DFS rate at 5 years is defined as the proportion of patients alive and disease free at 5 years from the first dosing of study treatment as estimated by Kaplan-Meier method, respectively. Patients who are disease-free and alive at the time of analysis will be censored at the date of their latest follow-up assessment known to be disease-free.

    Measured: Up to 5 years for each subject from the first dosing of study treatment.

  3. OS rate at 2 years

    OS (Overall survival) is defined as the time from the first dosing of study treatment to the date of death from any cause; OS rate at 2 years is defined as the proportion of patients alive at 2 years from the first dosing of study treatment; Following disease recurrence, patients will be followed up for survival every 24 weeks until study completion

    Measured: Up to 2 years for each subject from the first dosing of study treatment.

  4. OS rate at 3 years

    OS (Overall survival) is defined as the time from the first dosing of study treatment to the date of death from any cause; OS rate at 3 years is defined as the proportion of patients alive at 3 years from the first dosing of study treatment; Following disease recurrence, patients will be followed up for survival every 24 weeks until study completion

    Measured: Up to 3 years for each subject from the first dosing of study treatment.

  5. OS rate at 4 years

    OS (Overall survival) is defined as the time from the first dosing of study treatment to the date of death from any cause; OS rate at 4 years is defined as the proportion of patients alive at 4 years from the first dosing of study treatment; Following disease recurrence, patients will be followed up for survival every 24 weeks until study completion

    Measured: Up to 4 years for each subject from the first dosing of study treatment.

  6. OS rate at 5 years

    OS (Overall survival) is defined as the time from the first dosing of study treatment to the date of death from any cause; OS rate at 5 years is defined as the proportion of patients alive at 5 years from the first dosing of study treatment; Following disease recurrence, patients will be followed up for survival every 24 weeks until study completion

    Measured: Up to 5 years for each subject from the first dosing of study treatment.

  7. Median DFS by investigator assessment (if applicable)

    DFS is defined as the date from first dosing of study treatment until the date of disease recurrence by investigator assessment or death from any cause in the absence of disease recurrence.Patients will be evaluated for disease recurrence at 12 weeks, 24 weeks, relative to enrollment, and then every 24 weeks until recurrence or 5 years. It is important to follow the assessment schedule as closely as possible.

    Measured: Up to 5 years for each subject from the first dosing of study treatment.

  8. DFS rate at 4 years

    DFS is defined as the time from the first dosing of study treatment until the date of disease recurrence by investigator assessment or death by any cause in the absence of disease recurrence. DFS rate at 4 years is defined as the proportion of patients alive and disease free at 4 years from the first dosing of study treatment as estimated by Kaplan-Meier method, respectively. Patients who are disease-free and alive at the time of analysis will be censored at the date of their latest follow-up assessment known to be disease-free.

    Measured: Up to 4 years for each subject from the first dosing of study treatment.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 Sep 2022
  2. Study start9 Feb 2023
  3. Primary completion30 Jun 2029 (estimated)
  4. Study completion30 Jun 2029 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
51 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05546866
Sponsor's protocol ID
D5161C00024
Status last verified
Aug 2026
First submitted
11 Mar 2022
Last updated
6 Aug 2026
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal. All request will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Osimertinib in people with Non-small Cell Lung Cancer, run by AstraZeneca at 10 sites in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 19 inclusion and 43 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 6 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 10 sites in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

3-year disease-free survival (DFS) rate by investigator assessment (time frame: Up to 3 years for each subject from the first dosing of study treatment.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Aug 2026.

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