Breast Cancer, Estrogen Receptor-PositivePhase 2NCT06733233
A Study Evaluating the Efficacy and Safety of De Trastuzumab (T-DXd) in Combination with Immunotherapy for the Neoadjuvant Treatment of HR-positive HER2 Low-expressing Chinese Patients with Early-stage Breast Cancer
A Phase 2 study testing T-DXd combined with immune checkpoint inhibitor in people with Breast Cancer, Estrogen Receptor-Positive and HER2 Low Breast Cancer, run by Guangzhou Women and Children's Medical Center.
Trial summary
This is a prospective, open-label, multicenter, single-arm clinical study designed to compare the efficacy and safety of neoadjuvant treatment with T-DXd in combination with an immune checkpoint inhibitor in patients with primary intermediate- to high-risk HR-positive, HER2-overexpressing early-stage breast cancer. Read more about this study
- Who is it for?
- Ages 18 to 70 years, women only
- Conditions the study is for
- Breast Cancer, Estrogen Receptor-Positive, HER2 Low Breast Cancer
- What is being tested?
- T-DXd combined with immune checkpoint inhibitor
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 23 participants
- Where
- No sites listed yet
- Study dates
- 1 Jan 2025to 1 Jan 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 70 years
- Women only
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adults between the ages of 18 and 70 at the time of signing the informed consent form.
- An Eastern Cooperative Oncology Group (ECOG) score of 0 to 1.
- Previously untreated, operable invasive breast cancer measuring greater than 2.0 centimeters (cT2) with positive clinical lymph nodes (cN1/cN2); or clinically staged T3-T4, clinically lymph node-negative (N0) or clinically lymph node-positive (cN1/cN2) without distal metastases.
- Tumors with low levels of HER2 expression by immunohistochemistry (IHC), defined as IHC 1+ or IHC 2+ and FISH negative.
- Tumor documented as HR-positive (ER and/or PgR-positive [ER or PgR ≥1%] by local assessment according to ASCO-CAP guidelines).
- Patients who agree to undergo surgical treatment for breast cancer when they meet surgical criteria after neoadjuvant therapy.
Who cannot join
- Stage IV (metastatic) breast cancer and bilateral breast cancer
- Previous history of invasive breast cancer.
- Previous history of ductal carcinoma in situ (DCIS) or lobular carcinoma in situ (LCIS)
- Other malignant tumors within 5 years, excluding cured carcinoma in situ of the cervix and non-melanoma skin cancers.
Trial locations and contacts
No sites are listed yet. Contact the study team or a site near you to ask about taking part.
About this study
Official title: A Multicenter, Prospective Phase II Single-arm Study Evaluating the Efficacy and Safety of Neoadjuvant Treatment with T-DXd in Combination with an Immune Checkpoint Inhibitor in HR-positive HER2 Low-expressing Chinese Patients with Early-stage Breast Cancer
This is a prospective, open-label, multicenter, single-arm clinical study designed to compare the efficacy and safety of neoadjuvant treatment with T-DXd in combination with an immune checkpoint inhibitor in patients with primary intermediate- to high-risk HR-positive, HER2-overexpressing early-stage breast cancer.
Read the detailed description
Neoadjuvant therapy, a systemic therapy administered prior to localized treatments such as surgery, has become a key component in the management of non-metastatic breast cancer. Neoadjuvant chemotherapy is often used to treat early-stage, high-risk hormone receptor-positive (HR+) breast cancer; however, the rate of pathological complete remission(pCR) is only 5-8 %. Moreover, neoadjuvant chemotherapy has significant toxicity, with approximately 25-40% of patients discontinuing chemotherapy or reducing their dosage due to side effect.
Much evidence suggests that immune checkpoint inhibitors (ICIs) combined with chemotherapy significantly increase pCR rates in HR+ breast cancer.
The CheckMate 7FL study evaluated the efficacy of ICI (nabulizumab) in early-stage HR-positive breast cancer, and ICI in combination with chemotherapy increased the pCR rate to 24%, compared to 13.8% in the chemotherapy arm[4].
The Keynote756 clinical trial demonstrated for the first time that the addition of an ICI (pembrolizumab) to a neoadjuvant chemotherapy regimen for early-stage, high-risk ER+/HER2- breast cancer significantly increased patients' pCR rates. These clinical trials imply that ICIs in combination with chemotherapy can provide more benefit to patients with early-stage breast cancer compared to traditional neoadjuvant chemotherapy treatments.
Trastuzumab deruxtecan (DS-8201a, T-DXd) is a novel HER2-targeted antibody-drug coupling (ADC) approved by the FDA and NMPA for the treatment of HER2-positive and HER2-low expressing metastatic breast cancer.
The BEGONIA study showed that Dato-DXd in combination with ICI (doxorubicinumab) for advanced triple-negative breast cancer had an ORR of up to 79%, which is superior to the efficacy of current ICIs in combination with chemotherapy; The DS8201-A-U105 study evaluated the efficacy of T-DXd in combination with navulizumab in HER2+ and HER2-low advanced breast cancer, with an ORR of 65.6% in the HER2+ and 50% in the HER2-low-expressing population, and the combination of T-DXd with navulizumab did not increase any overall toxicity.
The TALENT study explored the efficacy of T-DXd neoadjuvant therapy in patients with HR-positive HER2 low-expression early breast cancer. The results showed that T-DXd alone or in combination with ET achieved promising efficacy, with an ORR of 68% and a CR of 8% for T-DXd alone, indicating that T-DXd can also demonstrate very significant anti-tumor effects in early-stage breast cancer.
In view of the impressive efficacy and manageable safety of T-DXd in combination with ICIs in breast cancer patients, we designed this investigator-initiated clinical study with intermediate- and high-risk HR-positive HER2 low-expressing early-stage breast cancer patients to evaluate the efficacy and safety of T-DXd in combination with ICIs in early-stage HR-positive HER2 low-expressing breast cancer patients in a Chinese population.
This is a prospective, open-label, multicenter, single-arm clinical study designed to compare the efficacy and safety of neoadjuvant treatment with T-DXd in combination with an immune checkpoint inhibitor in patients with primary intermediate- to high-risk HR-positive, HER2-overexpressing early-stage breast cancer. Subjects who are eligible for the study and have signed informed consent will receive T-DXd in combination with an immunosuppressant. The specific dosing regimen is as follows:
T-DXd (5.4 mg/kg i.v. q3w) every 3 weeks for a total of 8 courses. Teraplizumab (240 mg/kg i.v. q3w), 1 course of treatment every 3 weeks for a total of 8 courses of treatment Upon discontinuation of the study, subjects will receive post-neoadjuvant therapy according to local clinical criteria.
Subjects will end study treatment if disease progression, intolerable toxicity, withdrawal of informed consent, or discontinuation of dosing is necessary in the judgment of the investigator occurs during the study treatment period, after which they will continue to receive follow-up, including metastatic disease recurrence and safety follow-up.
Subjects who complete surgical treatment will be followed for at least 3 years for the study endpoints of event-free survival (EFS), invasive disease-free survival (IDFS), overall survival (OS), and safety assessment. Safety data will be collected from the time of signing the informed consent form until 28 days after the end of study treatment.
- Being tested
- T-DXd combined with immune checkpoint inhibitor
- Keywords
- Breast cancer, immunotherapy, DS8201, Neoadjuvant
- Medical subject headings
- Breast Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
T-DXd combined with immune checkpoint inhibitorDrug
Subjects who are eligible for the study and have signed informed consent will receive T-DXd in combination with an immune checkpoint inhibitor. The specific dosing regimen is as follows: T-DXd (5.4 mg/kg i.v. q3w) every 3 weeks for a total of 8 courses. Teraplizumab (240 mg/kg i.v. q3w), 1 course every 3 weeks for a total of 8 courses.
| Study group | Role | What they receive |
|---|---|---|
| T-DXd combined with immune checkpoint inhibitor | Experimental | Not described Receives: Drug: T-DXd combined with immune checkpoint inhibitor |
What is being measured
The primary outcome is the main question the study is designed to answer.
pathologic complete remission
Measured: 3 years
Secondary outcomes (3)
event free survival
Measured: 3 years
invasive disease free survival
Measured: 3 years
overall survival
Measured: 3 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Dec 2024
- Study start1 Jan 2025 (estimated)
- Primary completion1 Jan 2028 (estimated)
- Study completion1 Jan 2029 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (5)Papers the sponsor has linked to this study.
- Other trials for Breast Cancer, Estrogen Receptor-PositiveStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Non-randomised
- Intervention model
- Single group
- Model description
- Subjects who are eligible for the study and have signed informed consent will receive T-DXd in combination with an immune checkpoint inhibitor. The specific dosing regimen is as follows: T-DXd (5.4 mg/kg i.v. q3w) every 3 weeks for a total of 8 courses. Teraplizumab (240 mg/kg i.v. q3w), 1 course every 3 weeks for a total of 8 courses. Upon discontinuation of the study, subjects will receive post-neoadjuvant therapy according to local clinical criteria.
- Masking
- None (open label)
- Enrolment
- 23 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Guangzhou Women and Children's Medical Center
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Huijin Wang, Guangzhou Women and Children's Medical Center
- Investigators
- Li Jie director, Doctor, Principal investigator, Women and Children's Medical Center of Guangzhou Medical University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06733233
- Sponsor's protocol ID
- 158A01
- Status last verified
- Dec 2024
- First submitted
- 10 Dec 2024
- Last updated
- 13 Dec 2024
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Disease information of participants, Evaluation of treatment outcomes for participants
Publications
Martin M, Pandiella A, Vargas-Castrillon E, Diaz-Rodriguez E, Iglesias-Hernangomez T, Martinez Cano C, Fernandez-Cuesta I, Winkow E, Perello MF. Trastuzumab deruxtecan in breast cancer. Crit Rev Oncol Hematol. 2024 Jun;198:104355. doi: 10.1016/j.critrevonc.2024.104355. Epub 2024 Apr 16.
PubMed 38621469Eskander RN, Sill MW, Beffa L, Moore RG, Hope JM, Musa FB, Mannel R, Shahin MS, Cantuaria GH, Girda E, Mathews C, Kavecansky J, Leath CA 3rd, Gien LT, Hinchcliff EM, Lele SB, Landrum LM, Backes F, O'Cearbhaill RE, Al Baghdadi T, Hill EK, Thaker PH, John VS, Welch S, Fader AN, Powell MA, Aghajanian C. Pembrolizumab plus Chemotherapy in Advanced Endometrial Cancer. N Engl J Med. 2023 Jun 8;388(23):2159-2170. doi: 10.1056/NEJMoa2302312. Epub 2023 Mar 27.
PubMed 36972022Spring LM, Gupta A, Reynolds KL, Gadd MA, Ellisen LW, Isakoff SJ, Moy B, Bardia A. Neoadjuvant Endocrine Therapy for Estrogen Receptor-Positive Breast Cancer: A Systematic Review and Meta-analysis. JAMA Oncol. 2016 Nov 1;2(11):1477-1486. doi: 10.1001/jamaoncol.2016.1897.
PubMed 27367583Tarantino P, Jin Q, Tayob N, Jeselsohn RM, Schnitt SJ, Vincuilla J, Parker T, Tyekucheva S, Li T, Lin NU, Hughes ME, Weiss AC, King TA, Mittendorf EA, Curigliano G, Tolaney SM. Prognostic and Biologic Significance of ERBB2-Low Expression in Early-Stage Breast Cancer. JAMA Oncol. 2022 Aug 1;8(8):1177-1183. doi: 10.1001/jamaoncol.2022.2286.
PubMed 35737367Denkert C, Seither F, Schneeweiss A, Link T, Blohmer JU, Just M, Wimberger P, Forberger A, Tesch H, Jackisch C, Schmatloch S, Reinisch M, Solomayer EF, Schmitt WD, Hanusch C, Fasching PA, Lubbe K, Solbach C, Huober J, Rhiem K, Marme F, Reimer T, Schmidt M, Sinn BV, Janni W, Stickeler E, Michel L, Stotzer O, Hahnen E, Furlanetto J, Seiler S, Nekljudova V, Untch M, Loibl S. Clinical and molecular characteristics of HER2-low-positive breast cancer: pooled analysis of individual patient data from four prospective, neoadjuvant clinical trials. Lancet Oncol. 2021 Aug;22(8):1151-1161. doi: 10.1016/S1470-2045(21)00301-6. Epub 2021 Jul 9.
PubMed 34252375
Study at a glance
From the registry record, last updated by the sponsor on 13 Dec 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Multicenter, Prospective Phase II Single-arm Study Evaluating the Efficacy and Safety of Neoadjuvant Treatment with T-DXd in Combination with an Immune Checkpoint Inhibitor in HR-positive HER2 Low-expressing Chinese Patients with Early-stage Breast Cancer
- ClinicalTrials.gov ID
- NCT06733233
- Acronym / sponsor ID
- 158A01
- Keywords
- Breast cancer, immunotherapy, DS8201, Neoadjuvant
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 23 participants (estimated)
- Lead sponsor
- Guangzhou Women and Children's Medical CenterUniversity, hospital or other
- Study start
- 1 Jan 2025 (estimated)
- Primary completion
- 1 Jan 2028 (estimated)
- Study completion
- 1 Jan 2029 (estimated)
- First posted
- 13 Dec 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a prospective, open-label, multicenter, single-arm clinical study designed to compare the efficacy and safety of neoadjuvant treatment with T-DXd in combination with an immune checkpoint inhibitor in patients with primary intermediate- to high-risk HR-positive, HER2-overexpressing early-stage breast cancer.
Detailed description
Neoadjuvant therapy, a systemic therapy administered prior to localized treatments such as surgery, has become a key component in the management of non-metastatic breast cancer. Neoadjuvant chemotherapy is often used to treat early-stage, high-risk hormone receptor-positive (HR+) breast cancer; however, the rate of pathological complete remission(pCR) is only 5-8 %. Moreover, neoadjuvant chemotherapy has significant toxicity, with approximately 25-40% of patients discontinuing chemotherapy or reducing their dosage due to side effect.
Much evidence suggests that immune checkpoint inhibitors (ICIs) combined with chemotherapy significantly increase pCR rates in HR+ breast cancer.
The CheckMate 7FL study evaluated the efficacy of ICI (nabulizumab) in early-stage HR-positive breast cancer, and ICI in combination with chemotherapy increased the pCR rate to 24%, compared to 13.8% in the chemotherapy arm[4].
The Keynote756 clinical trial demonstrated for the first time that the addition of an ICI (pembrolizumab) to a neoadjuvant chemotherapy regimen for early-stage, high-risk ER+/HER2- breast cancer significantly increased patients' pCR rates. These clinical trials imply that ICIs in combination with chemotherapy can provide more benefit to patients with early-stage breast cancer compared to traditional neoadjuvant chemotherapy treatments.
Trastuzumab deruxtecan (DS-8201a, T-DXd) is a novel HER2-targeted antibody-drug coupling (ADC) approved by the FDA and NMPA for the treatment of HER2-positive and HER2-low expressing metastatic breast cancer.
The BEGONIA study showed that Dato-DXd in combination with ICI (doxorubicinumab) for advanced triple-negative breast cancer had an ORR of up to 79%, which is superior to the efficacy of current ICIs in combination with chemotherapy; The DS8201-A-U105 study evaluated the efficacy of T-DXd in combination with navulizumab in HER2+ and HER2-low advanced breast cancer, with an ORR of 65.6% in the HER2+ and 50% in the HER2-low-expressing population, and the combination of T-DXd with navulizumab did not increase any overall toxicity.
The TALENT study explored the efficacy of T-DXd neoadjuvant therapy in patients with HR-positive HER2 low-expression early breast cancer. The results showed that T-DXd alone or in combination with ET achieved promising efficacy, with an ORR of 68% and a CR of 8% for T-DXd alone, indicating that T-DXd can also demonstrate very significant anti-tumor effects in early-stage breast cancer.
In view of the impressive efficacy and manageable safety of T-DXd in combination with ICIs in breast cancer patients, we designed this investigator-initiated clinical study with intermediate- and high-risk HR-positive HER2 low-expressing early-stage breast cancer patients to evaluate the efficacy and safety of T-DXd in combination with ICIs in early-stage HR-positive HER2 low-expressing breast cancer patients in a Chinese population.
This is a prospective, open-label, multicenter, single-arm clinical study designed to compare the efficacy and safety of neoadjuvant treatment with T-DXd in combination with an immune checkpoint inhibitor in patients with primary intermediate- to high-risk HR-positive, HER2-overexpressing early-stage breast cancer. Subjects who are eligible for the study and have signed informed consent will receive T-DXd in combination with an immunosuppressant. The specific dosing regimen is as follows:
T-DXd (5.4 mg/kg i.v. q3w) every 3 weeks for a total of 8 courses. Teraplizumab (240 mg/kg i.v. q3w), 1 course of treatment every 3 weeks for a total of 8 courses of treatment Upon discontinuation of the study, subjects will receive post-neoadjuvant therapy according to local clinical criteria.
Subjects will end study treatment if disease progression, intolerable toxicity, withdrawal of informed consent, or discontinuation of dosing is necessary in the judgment of the investigator occurs during the study treatment period, after which they will continue to receive follow-up, including metastatic disease recurrence and safety follow-up.
Subjects who complete surgical treatment will be followed for at least 3 years for the study endpoints of event-free survival (EFS), invasive disease-free survival (IDFS), overall survival (OS), and safety assessment. Safety data will be collected from the time of signing the informed consent form until 28 days after the end of study treatment.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- Subjects who are eligible for the study and have signed informed consent will receive T-DXd in combination with an immune checkpoint inhibitor. The specific dosing regimen is as follows: T-DXd (5.4 mg/kg i.v. q3w) every 3 weeks for a total of 8 courses. Teraplizumab (240 mg/kg i.v. q3w), 1 course every 3 weeks for a total of 8 courses. Upon discontinuation of the study, subjects will receive post-neoadjuvant therapy according to local clinical criteria.
| Arm | Type | Receives |
|---|---|---|
| T-DXd combined with immune checkpoint inhibitor | Experimental | Drug: T-DXd combined with immune checkpoint inhibitor |
Who may qualify
- Ages
- 18 to 70 years
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Adults between the ages of 18 and 70 at the time of signing the informed consent form.
- An Eastern Cooperative Oncology Group (ECOG) score of 0 to 1.
- Previously untreated, operable invasive breast cancer measuring greater than 2.0 centimeters (cT2) with positive clinical lymph nodes (cN1/cN2); or clinically staged T3-T4, clinically lymph node-negative (N0) or clinically lymph node-positive (cN1/cN2) without distal metastases.
- Tumors with low levels of HER2 expression by immunohistochemistry (IHC), defined as IHC 1+ or IHC 2+ and FISH negative.
- Tumor documented as HR-positive (ER and/or PgR-positive [ER or PgR ≥1%] by local assessment according to ASCO-CAP guidelines).
Key exclusion criteria (4 listed)
- Stage IV (metastatic) breast cancer and bilateral breast cancer
- Previous history of invasive breast cancer.
- Previous history of ductal carcinoma in situ (DCIS) or lobular carcinoma in situ (LCIS)
- Other malignant tumors within 5 years, excluding cured carcinoma in situ of the cervix and non-melanoma skin cancers.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| T-DXd combined with immune checkpoint inhibitorSubjects who are eligible for the study and have signed informed consent will receive T-DXd in combination with an immune checkpoint inhibitor. The specific dosing regimen is as follows: T-DXd (5.4 mg/kg i.v. q3w) every 3 weeks for a total of 8 courses. Teraplizumab (240 mg/kg i.v. q3w), 1 course every 3 weeks for a total of 8 courses. | Drug | T-DXd combined with immune checkpoint inhibitor |
Primary outcome
pathologic complete remission
Time frame: 3 years
3 secondary outcomes
event free survival
Time frame: 3 years
invasive disease free survival
Time frame: 3 years
overall survival
Time frame: 3 years
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Dec 2024.
- Background: PubMed 38621469Martin M, Pandiella A, Vargas-Castrillon E, Diaz-Rodriguez E, Iglesias-Hernangomez T, Martinez Cano C, Fernandez-Cuesta I, Winkow E, Perello MF. Trastuzumab deruxtecan in breast cancer. Crit Rev Oncol Hematol. 2024 Jun;198:104355. doi: 10.1016/j.critrevonc.2024.104355. Epub 2024 Apr 16.
- Background: PubMed 36972022Eskander RN, Sill MW, Beffa L, Moore RG, Hope JM, Musa FB, Mannel R, Shahin MS, Cantuaria GH, Girda E, Mathews C, Kavecansky J, Leath CA 3rd, Gien LT, Hinchcliff EM, Lele SB, Landrum LM, Backes F, O'Cearbhaill RE, Al Baghdadi T, Hill EK, Thaker PH, John VS, Welch S, Fader AN, Powell MA, Aghajanian C. Pembrolizumab plus Chemotherapy in Advanced Endometrial Cancer. N Engl J Med. 2023 Jun 8;388(23):2159-2170. doi: 10.1056/NEJMoa2302312. Epub 2023 Mar 27.
- Background: PubMed 27367583Spring LM, Gupta A, Reynolds KL, Gadd MA, Ellisen LW, Isakoff SJ, Moy B, Bardia A. Neoadjuvant Endocrine Therapy for Estrogen Receptor-Positive Breast Cancer: A Systematic Review and Meta-analysis. JAMA Oncol. 2016 Nov 1;2(11):1477-1486. doi: 10.1001/jamaoncol.2016.1897.
- Background: PubMed 35737367Tarantino P, Jin Q, Tayob N, Jeselsohn RM, Schnitt SJ, Vincuilla J, Parker T, Tyekucheva S, Li T, Lin NU, Hughes ME, Weiss AC, King TA, Mittendorf EA, Curigliano G, Tolaney SM. Prognostic and Biologic Significance of ERBB2-Low Expression in Early-Stage Breast Cancer. JAMA Oncol. 2022 Aug 1;8(8):1177-1183. doi: 10.1001/jamaoncol.2022.2286.
- Background: PubMed 34252375Denkert C, Seither F, Schneeweiss A, Link T, Blohmer JU, Just M, Wimberger P, Forberger A, Tesch H, Jackisch C, Schmatloch S, Reinisch M, Solomayer EF, Schmitt WD, Hanusch C, Fasching PA, Lubbe K, Solbach C, Huober J, Rhiem K, Marme F, Reimer T, Schmidt M, Sinn BV, Janni W, Stickeler E, Michel L, Stotzer O, Hahnen E, Furlanetto J, Seiler S, Nekljudova V, Untch M, Loibl S. Clinical and molecular characteristics of HER2-low-positive breast cancer: pooled analysis of individual patient data from four prospective, neoadjuvant clinical trials. Lancet Oncol. 2021 Aug;22(8):1151-1161. doi: 10.1016/S1470-2045(21)00301-6. Epub 2021 Jul 9.
- Individual participant dataSharing planned: Yes. Disease information of participants, Evaluation of treatment outcomes for participants
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Li Jie director, Doctor principal investigator
Women and Children's Medical Center of Guangzhou Medical University
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing T-DXd combined with immune checkpoint inhibitor in people with Breast Cancer, Estrogen Receptor-Positive and HER2 Low Breast Cancer, run by Guangzhou Women and Children's Medical Center.
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 6 inclusion and 4 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 13 Dec 2024. Status can change between updates, so confirm with the study contact before making plans.
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?
Contact Wang Hui jin, doctor (+8618312660334, wanghuijin_doc@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
pathologic complete remission (time frame: 3 years). 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 NCT06733233, which also lists 5 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 13 Dec 2024; AzTrials last refreshed its copy on 7 Nov 2026.