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ALK-positive Advanced NSCLC PatientsNCT07045610

Primary Resistance Mechanisms of ALK TKIs

An observational study of ALK-positive Advanced NSCLC Patients and Primary Resistance, run by National Taiwan University Hospital at 1 site in Taiwan.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

Anaplastic lymphoma kinase (ALK) gene rearrangement is a known oncogenic driver in non-small cell lung cancer (NSCLC). ALK tyrosine kinase inhibitors (TKIs) have been clearly shown to produce excellent therapeutic effects and prolong survival in patients with this gene mutation. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
re-biopsy tumor with primary ALK tKI resistance for NGS
How many people
20 participants
Where
1 siteTaiwan
Study dates
1 Jul 2025to 1 Jul 2028
Phase
Observational
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 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: ALK-positive advanced NSCLC patients who develop primary resistance or rapid progression (within 3-6 months) during ALK inhibitor treatment.

Who may be able to join

  • Age ≥ 18 years old.
  • Histologically or cytologically diagnosed NSCLC
  • ALK gene fusion detected at initial diagnosis of NSCLC
  • Patients exhibiting primary resistance to ALK-TKI therapy, defined as the absence of initial response or progression within 3 to 6 months of treatment initiation, were included.
  • Able and willing to provide written informed consent prior to performing any study related procedures and to comply with the study protocol.

Who cannot join

  • Unable to provide written inform consent
  • The patients had received other systemic treatments except ALK TKI.
  • Unable to undergo tumor biopsy or venipuncture

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Shang-Gin Wu, Attending Physician contact

+886223562905

b8501091@gmail.com

Chin-Shing Chen, Professor contact

+8860223123456

chenjs@ntu.edu.tw

Taiwan1 site
  • National Taiwan University Hospital

    Taipei, 10099

    Shang-Gin Wu, 0972651242, b8501091@gmail.com

Other trials in Taiwan

About this study

Official title: Explore the Primary Resistance Mechanisms of Anaplastic Lymphoma Kinase Inhibitors

Anaplastic lymphoma kinase (ALK) gene rearrangement is a known oncogenic driver in non-small cell lung cancer (NSCLC). ALK tyrosine kinase inhibitors (TKIs) have been clearly shown to produce excellent therapeutic effects and prolong survival in patients with this gene mutation. According to current treatment guidelines, ALK inhibitors are the first-line treatment of choice for ALK-positive advanced NSCLC patients. However, although ALK TKIs are very effective, there is still a small group of patients who do not achieve good treatment outcomes, developing resistance and tumor progression within 3 to 6 months of initial ALK TKI use. This is called primary resistance. Intrinsic resistance to ALK inhibition occurs when the best clinical response after first-generation and second/third-generation TKI treatment is disease progression. Approximately 5-7% of cases after crizotinib treatment, 9% after ceritinib treatment, and 25% after lorlatinib treatment show no response to treatment, and no specific ALK mutation has been found to explain the occurrence of primary resistance. Currently, many different resistance mechanisms are known, some of which are still ALK-related, while others are ALK-independent alternative survival pathways. However, most research focuses on acquired resistance, with very few studies on primary resistance, only a few case reports. Therefore, this study aims to explore the primary ALK TKI resistance mechanisms.

The investigators plan to explore the incidence and mechanisms of primary ALK TKI resistance in ALK-positive advanced NSCLC patients who develop primary resistance or rapid progression (within 3-6 months) during ALK inhibitor treatment by re-obtaining tumor samples for genetic analysis.

Read the detailed description

Lung cancer is the most common cause of cancer death in Taiwan and worldwide [1]. The traditional chemotherapy, platinum-doublet chemotherapy, provided limited survival benefit. In the recent decades, the major evolution in lung cancer is the molecular subtyping of NSCLC, especially lung adenocarcinoma, which has resulted in a paradigm shift in the management of patients in advanced disease. The target therapy provided better treatment response and longer overall survival. For example, patients with NSCLC harboring Epidermal growth factor receptor (EGFR) mutations can get remarkable benefit and longer survival from EGFR tyrosine kinase inhibitors (TKIs) treatment comparing with the traditional platinum-base chemotherapy [2].

Anaplastic lymphoma kinase (ALK) gene rearrangements define a distinct molecular subset of NSCLC, typically occurring in younger, non-smoking individuals with adenocarcinoma histology [3]. The discovery of ALK fusions, particularly EML4-ALK, revolutionized the treatment of these patients with the development of ALK TKIs. First-generation ALK inhibitors, such as crizotinib, demonstrated remarkable initial responses, significantly improving progression-free survival (PFS) compared to standard chemotherapy [4]. However, the emergence of resistance, both primary and acquired, remains a major clinical challenge.

Primary resistance, defined as the lack of initial response or early progression within the first few months of ALK TKI therapy, occurs in a subset of patients and represents a significant obstacle to optimal treatment outcomes [5]. Primary resistance to ALK inhibition occurs, even with advanced TKI therapies, when the best clinical outcome is disease progression. Notably, approximately 5-7% of patients following crizotinib, 9% following ceritinib, and 25% following lorlatinib demonstrated a lack of response, and in these cases, no identifiable ALK mutations were detected [6]. Unlike acquired resistance, which typically arises from secondary mutations within the ALK kinase domain or activation of bypass signaling pathways, the mechanisms underlying primary resistance are less well understood.

Several potential factors contribute to primary resistance. One key aspect involves inherent tumor heterogeneity. NSCLC tumors are complex ecosystems with diverse subclones, some of which may harbor pre-existing genetic alterations that confer resistance to ALK inhibition [7]. These alterations might include co-occurring mutations in genes involved in cell signaling pathways, such as KRAS, EGFR, or TP53, which can bypass ALK dependence [6]. Furthermore, variations in ALK fusion isoforms or copy number alterations may also influence initial drug sensitivity. For example, some less common ALK fusion variants might possess distinct structural properties that reduce their affinity for ALK TKIs.

Another potential mechanism involves the tumor microenvironment (TME). The TME, composed of stromal cells, immune cells, and extracellular matrix, plays a critical role in tumor growth and drug response [8]. Components of the TME, such as cancer-associated fibroblasts (CAFs) and immunosuppressive cells, can secrete growth factors and cytokines that activate alternative signaling pathways, thereby promoting resistance to ALK inhibition. Additionally, the TME can create a physical barrier that limits drug penetration and efficacy.

Furthermore, the complexity of ALK signaling networks and the potential for activation of bypass pathways contribute to primary resistance. For example, activation of the EGFR or MET signaling pathways can provide alternative growth signals, bypassing the need for ALK activation [9]. Understanding these bypass pathways is crucial for developing combination therapies that can overcome primary resistance.

Investigating primary resistance requires a comprehensive approach that integrates genomic, transcriptomic, and proteomic analyses. Next-generation sequencing (NGS) can identify pre-existing genetic alterations that confer resistance. Single-cell RNA sequencing can dissect tumor heterogeneity and identify resistant subclones. Proteomic profiling can reveal activation of bypass signaling pathways. Clinical studies analyzing pre-treatment tumor samples and correlating genomic and clinical data are essential for identifying predictive biomarkers of primary resistance.

In summary, primary resistance to ALK TKIs in NSCLC is a complex phenomenon driven by multiple factors, including tumor heterogeneity, TME interactions, pharmacokinetic variations, and activation of bypass signaling pathways. Further research is needed to elucidate the precise mechanisms underlying primary resistance and to develop strategies to overcome this clinical challenge, ultimately improving outcomes for patients with ALK-positive NSCLC.

Being tested
re-biopsy tumor with primary ALK tKI resistance for NGS
Keywords
lung cancer, Anaplastic lymphoma kinase (ALK) gene rearrangement, gene mutation, Primary resistance, Next-generation sequencing, Target therapy
Medical subject headings
Lung Neoplasms

What participants receive

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

  • re-biopsy tumor with primary ALK tKI resistance for NGSDiagnostic test

    Lung cancer patients who initially use ALK TKI as first-line treatment will be invited to enroll and sign the consent form. Only those who meet the criteria for primary resistance or rapid progression will proceed with tumor sample collection for genetic analysis. Alternatively, patients who develop primary resistance or rapid progression after using ALK TKI and are about to undergo tumor re-biopsy can also sign the subject consent form to be included in this study.

Study groups in NCT07045610
Study groupRoleWhat they receive
Patients who develop primary resistance or rapid progression after using ALK TKI.Lung cancer patients who initially use ALK TKI as first-line treatment will be invited to enroll and sign the consent form. Only those who meet the criteria for primary resistance or rapid progression will proceed with tumor sample collection for genetic analysis. Alternatively, patients who develop primary resistance or rapid progression after using ALK TKI and are about to undergo tumor re-biopsy can also sign the subject consent form to be included in this study.
Receives: Diagnostic Test: re-biopsy tumor with primary ALK tKI resistance for NGS

What is being measured

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

  1. resistance mechanism

    Lung cancer patients who initially use ALK TKI as first-line treatment will be invited to enroll and sign the consent form. Only those who meet the criteria for primary resistance or rapid progression will proceed with tumor sample collection for NGS analysis. Alternatively, patients who develop primary resistance or rapid progression after using ALK TKI and are about to undergo tumor re-biopsy can also sign the subject consent form to be included in this study.

    Measured: From ALK TKI treatment to primary resistance or rapid progression for less than 6 months.

Timeline

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

  1. First posted1 Jul 2025
  2. Study start1 Jul 2025 (estimated)
  3. Primary completion1 Jul 2027 (estimated)
  4. Study completion1 Jul 2028 (estimated)

Resources

More details

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

Study design
Study type
Observational
Observational model
Case only
Time perspective
Prospective
Enrolment
20 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07045610
Sponsor's protocol ID
202504068RINB
Other IDs
TSTS
Status last verified
Jun 2025
First submitted
12 Jun 2025
Last updated
1 Jul 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Yoda S, Lin JJ, Lawrence MS, Burke BJ, Friboulet L, Langenbucher A, Dardaei L, Prutisto-Chang K, Dagogo-Jack I, Timofeevski S, Hubbeling H, Gainor JF, Ferris LA, Riley AK, Kattermann KE, Timonina D, Heist RS, Iafrate AJ, Benes CH, Lennerz JK, Mino-Kenudson M, Engelman JA, Johnson TW, Hata AN, Shaw AT. Sequential ALK Inhibitors Can Select for Lorlatinib-Resistant Compound ALK Mutations in ALK-Positive Lung Cancer. Cancer Discov. 2018 Jun;8(6):714-729. doi: 10.1158/2159-8290.CD-17-1256. Epub 2018 Apr 12.

    PubMed 29650534
  • Shaw AT, Kim DW, Mehra R, Tan DS, Felip E, Chow LQ, Camidge DR, Vansteenkiste J, Sharma S, De Pas T, Riely GJ, Solomon BJ, Wolf J, Thomas M, Schuler M, Liu G, Santoro A, Lau YY, Goldwasser M, Boral AL, Engelman JA. Ceritinib in ALK-rearranged non-small-cell lung cancer. N Engl J Med. 2014 Mar 27;370(13):1189-97. doi: 10.1056/NEJMoa1311107.

    PubMed 24670165
  • Hinshaw DC, Shevde LA. The Tumor Microenvironment Innately Modulates Cancer Progression. Cancer Res. 2019 Sep 15;79(18):4557-4566. doi: 10.1158/0008-5472.CAN-18-3962. Epub 2019 Jul 26.

    PubMed 31350295
  • Jamal-Hanjani M, Wilson GA, McGranahan N, Birkbak NJ, Watkins TBK, Veeriah S, Shafi S, Johnson DH, Mitter R, Rosenthal R, Salm M, Horswell S, Escudero M, Matthews N, Rowan A, Chambers T, Moore DA, Turajlic S, Xu H, Lee SM, Forster MD, Ahmad T, Hiley CT, Abbosh C, Falzon M, Borg E, Marafioti T, Lawrence D, Hayward M, Kolvekar S, Panagiotopoulos N, Janes SM, Thakrar R, Ahmed A, Blackhall F, Summers Y, Shah R, Joseph L, Quinn AM, Crosbie PA, Naidu B, Middleton G, Langman G, Trotter S, Nicolson M, Remmen H, Kerr K, Chetty M, Gomersall L, Fennell DA, Nakas A, Rathinam S, Anand G, Khan S, Russell P, Ezhil V, Ismail B, Irvin-Sellers M, Prakash V, Lester JF, Kornaszewska M, Attanoos R, Adams H, Davies H, Dentro S, Taniere P, O'Sullivan B, Lowe HL, Hartley JA, Iles N, Bell H, Ngai Y, Shaw JA, Herrero J, Szallasi Z, Schwarz RF, Stewart A, Quezada SA, Le Quesne J, Van Loo P, Dive C, Hackshaw A, Swanton C; TRACERx Consortium. Tracking the Evolution of Non-Small-Cell Lung Cancer. N Engl J Med. 2017 Jun 1;376(22):2109-2121. doi: 10.1056/NEJMoa1616288. Epub 2017 Apr 26.

    PubMed 28445112
  • Gainor JF, Dardaei L, Yoda S, Friboulet L, Leshchiner I, Katayama R, Dagogo-Jack I, Gadgeel S, Schultz K, Singh M, Chin E, Parks M, Lee D, DiCecca RH, Lockerman E, Huynh T, Logan J, Ritterhouse LL, Le LP, Muniappan A, Digumarthy S, Channick C, Keyes C, Getz G, Dias-Santagata D, Heist RS, Lennerz J, Sequist LV, Benes CH, Iafrate AJ, Mino-Kenudson M, Engelman JA, Shaw AT. Molecular Mechanisms of Resistance to First- and Second-Generation ALK Inhibitors in ALK-Rearranged Lung Cancer. Cancer Discov. 2016 Oct;6(10):1118-1133. doi: 10.1158/2159-8290.CD-16-0596. Epub 2016 Jul 18.

    PubMed 27432227
  • Katayama R, Shaw AT, Khan TM, Mino-Kenudson M, Solomon BJ, Halmos B, Jessop NA, Wain JC, Yeo AT, Benes C, Drew L, Saeh JC, Crosby K, Sequist LV, Iafrate AJ, Engelman JA. Mechanisms of acquired crizotinib resistance in ALK-rearranged lung Cancers. Sci Transl Med. 2012 Feb 8;4(120):120ra17. doi: 10.1126/scitranslmed.3003316. Epub 2012 Jan 25.

    PubMed 22277784
  • Camidge DR, Bang YJ, Kwak EL, Iafrate AJ, Varella-Garcia M, Fox SB, Riely GJ, Solomon B, Ou SH, Kim DW, Salgia R, Fidias P, Engelman JA, Gandhi L, Janne PA, Costa DB, Shapiro GI, Lorusso P, Ruffner K, Stephenson P, Tang Y, Wilner K, Clark JW, Shaw AT. Activity and safety of crizotinib in patients with ALK-positive non-small-cell lung cancer: updated results from a phase 1 study. Lancet Oncol. 2012 Oct;13(10):1011-9. doi: 10.1016/S1470-2045(12)70344-3. Epub 2012 Sep 4.

    PubMed 22954507
  • Shaw AT, Yeap BY, Mino-Kenudson M, Digumarthy SR, Costa DB, Heist RS, Solomon B, Stubbs H, Admane S, McDermott U, Settleman J, Kobayashi S, Mark EJ, Rodig SJ, Chirieac LR, Kwak EL, Lynch TJ, Iafrate AJ. Clinical features and outcome of patients with non-small-cell lung cancer who harbor EML4-ALK. J Clin Oncol. 2009 Sep 10;27(26):4247-53. doi: 10.1200/JCO.2009.22.6993. Epub 2009 Aug 10.

    PubMed 19667264
  • Lynch TJ, Bell DW, Sordella R, Gurubhagavatula S, Okimoto RA, Brannigan BW, Harris PL, Haserlat SM, Supko JG, Haluska FG, Louis DN, Christiani DC, Settleman J, Haber DA. Activating mutations in the epidermal growth factor receptor underlying responsiveness of non-small-cell lung cancer to gefitinib. N Engl J Med. 2004 May 20;350(21):2129-39. doi: 10.1056/NEJMoa040938. Epub 2004 Apr 29.

    PubMed 15118073
  • Siegel RL, Kratzer TB, Giaquinto AN, Sung H, Jemal A. Cancer statistics, 2025. CA Cancer J Clin. 2025 Jan-Feb;75(1):10-45. doi: 10.3322/caac.21871. Epub 2025 Jan 16.

    PubMed 39817679

Questions about this trial

What is this clinical trial studying?

An observational study of ALK-positive Advanced NSCLC Patients and Primary Resistance, run by National Taiwan University Hospital at 1 site in Taiwan.

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 5 inclusion and 3 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: opening soon, as of the sponsor's last update on 1 Jul 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Taiwan. 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.

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?

Contact Shang-Gin Wu, Attending Physician (+886223562905, b8501091@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

resistance mechanism (time frame: From ALK TKI treatment to primary resistance or rapid progression for less than 6 months.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07045610, which also lists 10 linked publications.

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 1 Jul 2025.

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