AzTrials
AzTrials

Breast CancerPhase 2NCT06599216

Adebrelimab Combined With Dalpiciclib and Standard Endocrine Therapy for HR + / HER2- Breast Cancer

A Phase 2 study testing Adebrelimab+Dalpciclib+Standard Endocrine Therapy in people with Breast Cancer and HR+/HER2- Breast Cancer, run by Harbin Medical University at 2 sites in China.

Active, not recruiting

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

Official record
Search all trials

Trial summary

This study intends to explore the efficacy and safety of PD-L1 inhibitor Adebrelimab combined with the CDK4/6 inhibitor Dalpcicilib and standard endocrine therapy given as neoadjuvant treatment in stages II-III hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) breast cancer. Read more about this study

Who is it for?
Ages 18 years and older, women only
Conditions the study is for
Breast Cancer, HR+/HER2- Breast Cancer
What is being tested?
Adebrelimab+Dalpciclib+Standard Endocrine Therapy
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
30 participants
Where
2 sitesChina
Study dates
8 Oct 2024to 1 Sep 2027
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 years and older
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Postmenopausal women, aged ≥18 years;
  • Postmenopausal patients and all patients in the screening period must one of the following:
  • Previous bilateral oophorectomy, or aged ≥60 years;
  • Aged <60 years, natural Postmenopausal status (defined as spontaneous cessation for at least 12 consecutive months without other pathological or physiological causes), E2 and FSH at the postmenopausal level;
  • Histologically confirmed HR+/HER2- invasive breast cancer (specific definition: ER \&gt;10% tumor cell positive is defined as ER positive, PR \&gt;10% tumor cell positive is defined as PR positive, ER and/or PR positive is defined as HR positive; HER2 0-1+ or HER2 ++ but negative by FISH test, no amplification, defined as HER2 negative);
  • Histologically confirmed invasive breast cancer, stage II-III breast cancer diagnosed based on AJCC cancer staging system (8th edition) ;
Show all 12Show fewer
  • Eastern Cooperative Oncology Group (ECOG) performance status score of 0-1;
  • According to the RECIST 1.1 standard, at least one measurable lesion exists;
  • The main organs have basically normal functions and meet the following conditions:
  • Bone marrow function: Hb≥90 g/L (no blood was transfused within 14 days); ANC≥1.5×109/L;PLT≥80×I09/L;
  • Liver and kidney function: TBlL≤1.5×ULN; ALT and AST≤3×ULN; serum Cr≤1.5 ULN and creatinine clearance>50 ml/min (Cockcroft-Gault formula);
  • Subjects voluntarily joined the study, signed informed consent, had good compliance, and cooperated with follow-up.

Who cannot join

  • Previous use of CDK4/6 inhibitors or PD1/PD-L1 monoclonal antibody or concurrent treatment with any other antitumor therapy;
  • Severe organ dysfunction;
  • Inability to swallow,chronic diarrhea and intestinal obstruction,there are multiple factors that affect drug intake and absorption;
  • Patients with known HBV or HCV infection active phase or HBV DNA≥500, or chronic phase with abnormal liver function;
  • History of active autoimmune disease (such as interstitial pneumonia, colitis, hepatitis, pituitaritis, vasculitis, nephritis, hyperthyroidism, hypothyroidism, including but not limited to these diseases or syndromes)
  • History of immunodeficiency, including HIV testing positive, or other acquired, congenital immunodeficiency diseases, or a history of organ transplantation and allogeneic bone marrow transplantation; History of interstitial lung disease (except radiation pneumonia without hormone therapy) and non-infectious pneumonia;
Show all 11Show fewer
  • History of any heart disease, including:1)medicated or clinically significant arrhythmia; 2) myocardial infarction; 3) heart failure; 4) any other cardiac disease judged by the investigator for the trial;
  • Patients during pregnancy and lactation, women of childbearing age who refuse to take effective contraceptive measures during the study period;
  • According to the discretion of the investigator, there are significant risks to patient safety or concomitant diseases affecting the patient\&#39;s completion of the study (including but not limited to severe hypertension, severe diabetes, active infection);
  • Have a clear history of neurological or psychiatric disorders, including epilepsy or dementia;
  • Any condition deemed inappropriate for the patient\&#39;s participation in this study by the investigator.

Trial locations and contacts

2 sites in 1 country.

China2 sites

  • Harbin Medical Cancer Hospital

    Harbin, Heilongjiang, 150081

  • Harbin Medical University Cancer Hospital

    Harbin, Heilongjiang

Other trials in China

About this study

Official title: Adebrelimab Combined With Dalpicicliband Standard Endocrine Therapy for HR + / HER 2-breast Cancer:A Single-center,Open-label,Single-arm Clinical Trial

This study intends to explore the efficacy and safety of PD-L1 inhibitor Adebrelimab combined with the CDK4/6 inhibitor Dalpcicilib and standard endocrine therapy given as neoadjuvant treatment in stages II-III hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) breast cancer.

Read the detailed description

This single-center, open-label, single-arm clinical trial aims to evaluate the efficacy and safety of the neoadjuvant treatment with the PD-L1 inhibitor Adebrelimab in combination with the CDK4/6 inhibitor Dalpicicilib in combination with standard endocrine therapy, for stages II-III hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) breast cancer.

Being tested
Adebrelimab+Dalpciclib+Standard Endocrine Therapy
Medical subject headings
Breast Neoplasms

What participants receive

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

  • Adebrelimab+Dalpciclib+Standard Endocrine TherapyDrug

    Adebrelimab: 1200mg, intravenously, Q4w Dalpiciclib: 150mg once a day for 3 weeks, stop for 1 week, Q4w Standard Endocrine Therapy: Choice of endocrine therapy is according to guidelines and centre policy by investigator

Study groups in NCT06599216
Study groupRoleWhat they receive
Treatment GroupExperimentalNot described
Receives: Drug: Adebrelimab+Dalpciclib+Standard Endocrine Therapy

What is being measured

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

  1. tpCR rate

    Total pathologic complete response (tpCR) rate, defined as ypT0/is, ypN0 as assessed by investigator.

    Measured: through study completion, an average of one and a half years

Secondary outcomes (4)

  1. OS

    OS is defined as the time between enrollment and the patient\&#39;s death due to any cause.

    Measured: up to 3 years

  2. EFS

    Event-Free Survival (EFS) is defined as the time from firest dose to disease progression, disease recurrence, or death, whichever comes first.

    Measured: up to 3 years

  3. Ki67

    Evaluation by a pathologist by manual counting according to WHO 2017 recommendations

    Measured: Baseline and At Surgery

  4. ORR

    Objective response rate(ORR) is defined as the proportion of patients with complete response(CR) and partial response(PR) assessed by the investigator in accordance with the RECIST 1.1 criteria.

    Measured: Baseline up to Cycle 5（each cycle is 28 days）

Timeline

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

  1. First posted19 Sep 2024
  2. Study start8 Oct 2024
  3. Primary completion1 Mar 2026 (estimated)
  4. Study completion1 Sep 2027 (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
30 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06599216
Sponsor's protocol ID
MA-BC-II-071
Status last verified
Aug 2025
First submitted
11 Sep 2024
Last updated
21 Aug 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • Zhang P, Zhang Q, Tong Z, Sun T, Li W, Ouyang Q, Hu X, Cheng Y, Yan M, Pan Y, Teng Y, Yan X, Wang Y, Xie W, Zeng X, Wang X, Hu C, Geng C, Zhang H, Li W, Wu X, Zhong J, Xu J, Shi Y, Wei W, Bayaxi N, Zhu X, Xu B. Dalpiciclib plus letrozole or anastrozole versus placebo plus letrozole or anastrozole as first-line treatment in patients with hormone receptor-positive, HER2-negative advanced breast cancer (DAWNA-2): a multicentre, randomised, double-blind, placebo-controlled, phase 3 trial. Lancet Oncol. 2023 Jun;24(6):646-657. doi: 10.1016/S1470-2045(23)00172-9. Epub 2023 May 11.

    PubMed 37182538

  • Xu B, Zhang Q, Zhang P, Hu X, Li W, Tong Z, Sun T, Teng Y, Wu X, Ouyang Q, Yan X, Cheng J, Liu Q, Feng J, Wang X, Yin Y, Shi Y, Pan Y, Wang Y, Xie W, Yan M, Liu Y, Yan P, Wu F, Zhu X, Zou J; DAWNA-1 Study Consortium. Dalpiciclib or placebo plus fulvestrant in hormone receptor-positive and HER2-negative advanced breast cancer: a randomized, phase 3 trial. Nat Med. 2021 Nov;27(11):1904-1909. doi: 10.1038/s41591-021-01562-9. Epub 2021 Nov 4.

    PubMed 34737452

  • Wang J, Zhou C, Yao W, Wang Q, Min X, Chen G, Xu X, Li X, Xu F, Fang Y, Yang R, Yu G, Gong Y, Zhao J, Fan Y, Liu Q, Cao L, Yao Y, Liu Y, Li X, Wu J, He Z, Lu K, Jiang L, Hu C, Zhao W, Zhang B, Shi W, Zhang X, Cheng Y; CAPSTONE-1 Study Group. Adebrelimab or placebo plus carboplatin and etoposide as first-line treatment for extensive-stage small-cell lung cancer (CAPSTONE-1): a multicentre, randomised, double-blind, placebo-controlled, phase 3 trial. Lancet Oncol. 2022 Jun;23(6):739-747. doi: 10.1016/S1470-2045(22)00224-8. Epub 2022 May 13.

    PubMed 35576956

  • Nanda R, Liu MC, Yau C, Shatsky R, Pusztai L, Wallace A, Chien AJ, Forero-Torres A, Ellis E, Han H, Clark A, Albain K, Boughey JC, Jaskowiak NT, Elias A, Isaacs C, Kemmer K, Helsten T, Majure M, Stringer-Reasor E, Parker C, Lee MC, Haddad T, Cohen RN, Asare S, Wilson A, Hirst GL, Singhrao R, Steeg K, Asare A, Matthews JB, Berry S, Sanil A, Schwab R, Symmans WF, van 't Veer L, Yee D, DeMichele A, Hylton NM, Melisko M, Perlmutter J, Rugo HS, Berry DA, Esserman LJ. Effect of Pembrolizumab Plus Neoadjuvant Chemotherapy on Pathologic Complete Response in Women With Early-Stage Breast Cancer: An Analysis of the Ongoing Phase 2 Adaptively Randomized I-SPY2 Trial. JAMA Oncol. 2020 May 1;6(5):676-684. doi: 10.1001/jamaoncol.2019.6650.

    PubMed 32053137

  • Tolaney SM, Barroso-Sousa R, Keenan T, Li T, Trippa L, Vaz-Luis I, Wulf G, Spring L, Sinclair NF, Andrews C, Pittenger J, Richardson ET 3rd, Dillon D, Lin NU, Overmoyer B, Partridge AH, Van Allen E, Mittendorf EA, Winer EP, Krop IE. Effect of Eribulin With or Without Pembrolizumab on Progression-Free Survival for Patients With Hormone Receptor-Positive, ERBB2-Negative Metastatic Breast Cancer: A Randomized Clinical Trial. JAMA Oncol. 2020 Oct 1;6(10):1598-1605. doi: 10.1001/jamaoncol.2020.3524.

    PubMed 32880602

  • Rugo HS, Delord JP, Im SA, Ott PA, Piha-Paul SA, Bedard PL, Sachdev J, Le Tourneau C, van Brummelen EMJ, Varga A, Salgado R, Loi S, Saraf S, Pietrangelo D, Karantza V, Tan AR. Safety and Antitumor Activity of Pembrolizumab in Patients with Estrogen Receptor-Positive/Human Epidermal Growth Factor Receptor 2-Negative Advanced Breast Cancer. Clin Cancer Res. 2018 Jun 15;24(12):2804-2811. doi: 10.1158/1078-0432.CCR-17-3452. Epub 2018 Mar 20.

    PubMed 29559561

  • Dieci MV, Griguolo G, Miglietta F, Guarneri V. The immune system and hormone-receptor positive breast cancer: Is it really a dead end? Cancer Treat Rev. 2016 May;46:9-19. doi: 10.1016/j.ctrv.2016.03.011. Epub 2016 Mar 28.

    PubMed 27055087

  • Johnston SR, Kilburn LS, Ellis P, Dodwell D, Cameron D, Hayward L, Im YH, Braybrooke JP, Brunt AM, Cheung KL, Jyothirmayi R, Robinson A, Wardley AM, Wheatley D, Howell A, Coombes G, Sergenson N, Sin HJ, Folkerd E, Dowsett M, Bliss JM; SoFEA investigators. Fulvestrant plus anastrozole or placebo versus exemestane alone after progression on non-steroidal aromatase inhibitors in postmenopausal patients with hormone-receptor-positive locally advanced or metastatic breast cancer (SoFEA): a composite, multicentre, phase 3 randomised trial. Lancet Oncol. 2013 Sep;14(10):989-98. doi: 10.1016/S1470-2045(13)70322-X. Epub 2013 Jul 29.

    PubMed 23902874

  • Prat A, Saura C, Pascual T, Hernando C, Munoz M, Pare L, Gonzalez Farre B, Fernandez PL, Galvan P, Chic N, Gonzalez Farre X, Oliveira M, Gil-Gil M, Arumi M, Ferrer N, Montano A, Izarzugaza Y, Llombart-Cussac A, Bratos R, Gonzalez Santiago S, Martinez E, Hoyos S, Rojas B, Virizuela JA, Ortega V, Lopez R, Celiz P, Ciruelos E, Villagrasa P, Gavila J. Ribociclib plus letrozole versus chemotherapy for postmenopausal women with hormone receptor-positive, HER2-negative, luminal B breast cancer (CORALLEEN): an open-label, multicentre, randomised, phase 2 trial. Lancet Oncol. 2020 Jan;21(1):33-43. doi: 10.1016/S1470-2045(19)30786-7. Epub 2019 Dec 11.

    PubMed 31838010

  • Cottu P, D'Hondt V, Dureau S, Lerebours F, Desmoulins I, Heudel PE, Duhoux FP, Levy C, Mouret-Reynier MA, Dalenc F, Frenel JS, Jouannaud C, Venat-Bouvet L, Nguyen S, Ferrero JM, Canon JL, Grenier J, Callens C, Gentien D, Lemonnier J, Vincent-Salomon A, Delaloge S. Letrozole and palbociclib versus chemotherapy as neoadjuvant therapy of high-risk luminal breast cancer. Ann Oncol. 2018 Dec 1;29(12):2334-2340. doi: 10.1093/annonc/mdy448.

    PubMed 30307466

  • Hurvitz SA, Martin M, Press MF, Chan D, Fernandez-Abad M, Petru E, Rostorfer R, Guarneri V, Huang CS, Barriga S, Wijayawardana S, Brahmachary M, Ebert PJ, Hossain A, Liu J, Abel A, Aggarwal A, Jansen VM, Slamon DJ. Potent Cell-Cycle Inhibition and Upregulation of Immune Response with Abemaciclib and Anastrozole in neoMONARCH, Phase II Neoadjuvant Study in HR+/HER2- Breast Cancer. Clin Cancer Res. 2020 Feb 1;26(3):566-580. doi: 10.1158/1078-0432.CCR-19-1425. Epub 2019 Oct 15.

    PubMed 31615937

  • Ma CX, Gao F, Luo J, Northfelt DW, Goetz M, Forero A, Hoog J, Naughton M, Ademuyiwa F, Suresh R, Anderson KS, Margenthaler J, Aft R, Hobday T, Moynihan T, Gillanders W, Cyr A, Eberlein TJ, Hieken T, Krontiras H, Guo Z, Lee MV, Spies NC, Skidmore ZL, Griffith OL, Griffith M, Thomas S, Bumb C, Vij K, Bartlett CH, Koehler M, Al-Kateb H, Sanati S, Ellis MJ. NeoPalAna: Neoadjuvant Palbociclib, a Cyclin-Dependent Kinase 4/6 Inhibitor, and Anastrozole for Clinical Stage 2 or 3 Estrogen Receptor-Positive Breast Cancer. Clin Cancer Res. 2017 Aug 1;23(15):4055-4065. doi: 10.1158/1078-0432.CCR-16-3206. Epub 2017 Mar 7.

    PubMed 28270497

  • Johnston S, Puhalla S, Wheatley D, Ring A, Barry P, Holcombe C, Boileau JF, Provencher L, Robidoux A, Rimawi M, McIntosh SA, Shalaby I, Stein RC, Thirlwell M, Dolling D, Morden J, Snowdon C, Perry S, Cornman C, Batten LM, Jeffs LK, Dodson A, Martins V, Modi A, Osborne CK, Pogue-Geile KL, Cheang MCU, Wolmark N, Julian TB, Fisher K, MacKenzie M, Wilcox M, Huang Bartlett C, Koehler M, Dowsett M, Bliss JM, Jacobs SA. Randomized Phase II Study Evaluating Palbociclib in Addition to Letrozole as Neoadjuvant Therapy in Estrogen Receptor-Positive Early Breast Cancer: PALLET Trial. J Clin Oncol. 2019 Jan 20;37(3):178-189. doi: 10.1200/JCO.18.01624. Epub 2018 Dec 6.

    PubMed 30523750

  • Spring LM, Fell G, Arfe A, Sharma C, Greenup R, Reynolds KL, Smith BL, Alexander B, Moy B, Isakoff SJ, Parmigiani G, Trippa L, Bardia A. Pathologic Complete Response after Neoadjuvant Chemotherapy and Impact on Breast Cancer Recurrence and Survival: A Comprehensive Meta-analysis. Clin Cancer Res. 2020 Jun 15;26(12):2838-2848. doi: 10.1158/1078-0432.CCR-19-3492. Epub 2020 Feb 11.

    PubMed 32046998

  • Cejalvo JM, Pascual T, Fernandez-Martinez A, Braso-Maristany F, Gomis RR, Perou CM, Munoz M, Prat A. Clinical implications of the non-luminal intrinsic subtypes in hormone receptor-positive breast cancer. Cancer Treat Rev. 2018 Jun;67:63-70. doi: 10.1016/j.ctrv.2018.04.015. Epub 2018 May 7.

    PubMed 29763779

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Adebrelimab+Dalpciclib+Standard Endocrine Therapy in people with Breast Cancer and HR+/HER2- Breast Cancer, run by Harbin Medical University at 2 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 12 inclusion and 11 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 21 Aug 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 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?

tpCR rate (time frame: through study completion, an average of one and a half 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 NCT06599216, which also lists 19 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 21 Aug 2025; AzTrials last refreshed its copy on 6 Nov 2026.

AzTrials uses cookies for analytics and advertising. You can accept or reject them; the site works either way. Privacy Policy.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in