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Dalal AA, Goldschmidt D, Romdhani H, Kelkar S, Guerin A, Wang H, Caria N, Sawhney A, O'Shaughnessy J. Abstract P6-18-38: Treatment patterns and sequences among pre-menopausal women with HR+/HER2- metastatic breast cancer: A chart review study. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p6-18-38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Recently, a novel class of treatments, CDK4/6 inhibitors, has been approved, and is now recommended for pre-menopausal women with HR+/HER2- metastatic breast cancer (mBC). This study examined prevailing treatment patterns and sequencing among premenopausal women with mBC treated in clinical practice.
Methods: Patient-level data were collected from patient charts in May 2018 from 30 oncologists, mostly from community practice, in the US. Treatment sequences and patterns were assessed for pre-menopausal women diagnosed with HR+/HER2- mBC between January 2015 and January 2017 (with a minimum of 1 year of follow-up).
Results: Data were collected on 201 pre-menopausal women with HR+/HER2- mBC. In first-line therapy for mBC, 52.7% of the patients received a CDK4/6 inhibitor-based regimen, 23.4% received endocrine monotherapy, 20.9% received a chemotherapy-based regimen, and the remaining 3.0% received an everolimus-based regimen. The majority of patients who received a CDK4/6 inhibitor received it in combination with an AI (73.6%), fulvestrant (11.3%), or tamoxifen (6.6%). Approximately half of all patients (51.2%) received an ovarian suppression agent during first-line therapy. Overall, median time on treatment from Kaplan Meier (KM) analysis for first-line therapy was 16.1 months. Most common reason for discontinuing first line was disease progression or suboptimal response (79.0% of patients who discontinued); another common reason was the completion of the planned duration of therapy (12.6%).
Among the 106 patients who received a CDK4/6 inhibitor in the first line, median time on treatment from KM analysis was 26.8 months. Main reason for CDK4/6 inhibitor discontinuation was disease progression or suboptimal response (90.2% of patients who discontinued).
For the 109 patients for whom we observed a second-line therapy, treatment sequences are presented in Table 1. Median time on treatment for second and third line therapy was 9.6 and 7.8 months, respectively.
Conclusion: Following the introduction of novel CDK4/6 inhibitor treatments in the mBC setting, we observed that approximately half of pre-menopausal patients received a CDK4/6-based regimen in the first line of therapy.
Top 5 treatment sequences in pre-menopausal HR+/HER2- mBC patients (n=109)Treatment SequenceN(%)CDK4/6 - ET -> Everolimus - ET21(19.3%)Chemo -> Chemo16(14.7%)CDK4/6 - ET -> Chemo13(11.9%)ET -> CDK4/6 - ET13(11.9%)Chemo -> CDK4/6 - ET10(9.2%)ET: endocrine therapy; Chemo: chemotherapy; -> indicates a change to the next line of therapy. Percentages calculated among patients with at least 2 lines of therapy
Citation Format: Dalal AA, Goldschmidt D, Romdhani H, Kelkar S, Guerin A, Wang H, Caria N, Sawhney A, O'Shaughnessy J. Treatment patterns and sequences among pre-menopausal women with HR+/HER2- metastatic breast cancer: A chart review study [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P6-18-38.
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Affiliation(s)
- AA Dalal
- Novartis Pharmaceuticals Corporation, East Hanover, NJ; Analysis Group, New York, NY; Analysis Group, Montreal, QC, Canada; Baylor University Medical Center, Dallas, TX
| | - D Goldschmidt
- Novartis Pharmaceuticals Corporation, East Hanover, NJ; Analysis Group, New York, NY; Analysis Group, Montreal, QC, Canada; Baylor University Medical Center, Dallas, TX
| | - H Romdhani
- Novartis Pharmaceuticals Corporation, East Hanover, NJ; Analysis Group, New York, NY; Analysis Group, Montreal, QC, Canada; Baylor University Medical Center, Dallas, TX
| | - S Kelkar
- Novartis Pharmaceuticals Corporation, East Hanover, NJ; Analysis Group, New York, NY; Analysis Group, Montreal, QC, Canada; Baylor University Medical Center, Dallas, TX
| | - A Guerin
- Novartis Pharmaceuticals Corporation, East Hanover, NJ; Analysis Group, New York, NY; Analysis Group, Montreal, QC, Canada; Baylor University Medical Center, Dallas, TX
| | - H Wang
- Novartis Pharmaceuticals Corporation, East Hanover, NJ; Analysis Group, New York, NY; Analysis Group, Montreal, QC, Canada; Baylor University Medical Center, Dallas, TX
| | - N Caria
- Novartis Pharmaceuticals Corporation, East Hanover, NJ; Analysis Group, New York, NY; Analysis Group, Montreal, QC, Canada; Baylor University Medical Center, Dallas, TX
| | - A Sawhney
- Novartis Pharmaceuticals Corporation, East Hanover, NJ; Analysis Group, New York, NY; Analysis Group, Montreal, QC, Canada; Baylor University Medical Center, Dallas, TX
| | - J O'Shaughnessy
- Novartis Pharmaceuticals Corporation, East Hanover, NJ; Analysis Group, New York, NY; Analysis Group, Montreal, QC, Canada; Baylor University Medical Center, Dallas, TX
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Coleman RE, Fried G, Petrenciuc O, Sawhney A, Li R, Rugo HS. Abstract OT1-04-04: A phase 2 randomized, double-blind, placebo-controlled trial of endocrine therapy ± radium-223 dichloride in HER2-negative, hormone receptor–positive breast cancer patients with bone metastases. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-ot1-04-04] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Bone-metastatic breast cancer (MBC) treatment is limited. In a phase 2a study of bone-dominant MBC patients, radium-223, a first-in-class α emitter with targeted cytotoxic effect on bone metastases (mets), reduced bone biomarker levels with favorable safety (Coleman et al. Breast Cancer Res Treat. 2014).
Trial design: This study evaluates efficacy and safety of radium-223 versus placebo (pbo), each + endocrine treatment (ET), in patients with HER2- estrogen receptor+ (ER+)bone-dominant MBC (NCT02258464). Patients receive (1:1) radium-223 50 kBq/kg IV or pbo q 4 wk (6 cycles) + ET + denosumab or bisphosphonates + best supportive care. Stratification is by geographic region (EU/N America vs Asia), number of prior ET lines (1 vs ≥ 2) for MBC, and number of prior skeletal-related events (SREs) (1 vs 2).
Eligibility criteria: Eligible patients are pre- or postmenopausal with HER2- ER+ bone-dominant MBC and ≥ 2 bone mets or with soft tissue and/or visceral mets, and 1-2 prior SREs (external beam radiotherapy, pathologic bone fracture, spinal cord compression, orthopedic surgery); they have received ≥ 1 line of ET for MBC and are considered appropriate for further ET. Patients must have evaluable disease (RECIST 1.1), be taking bisphosphonates or denosumab for ≥ 1 month before study treatment, have an ECOG score 0-1, and have adequate hematologic, renal, and liver function. Patients must not have had visceral or brain mets or leptomeningeal disease, or need chemotherapy for MBC, and must not be suitable for everolimus for MBC. Patients are not eligible if they had prior radium-223 treatment or have untreated spinal cord compression.
Specific aims: The primary end point is SSE-free survival (SSE-FS). Secondary end points are radiologic progression-free survival; overall survival; times to opioid use, pain progression, and cytotoxic chemotherapy; pain improvement rate; and safety. Patients are assessed for efficacy and safety and are followed to SSE, radiologic progression, death, or withdrawal.
Statistical methods: Assuming 1-sided α 0.1, power 90%, ∼ 119 SSE-FS events are needed for analysis. Time-to-event analysis will use a log-rank test, accounting for stratification. Kaplan-Meier estimates and survival curves will be given for each treatment group. Safety analyses will be descriptive.
Present and target accrual: Target accrual is ∼ 227. Currently, 40 patients are randomized.
Contact Oana Petrenciuc, Bayer HealthCare Pharmaceuticals, oana.petrenciuc@bayer.com, for more information.
Citation Format: Coleman RE, Fried G, Petrenciuc O, Sawhney A, Li R, Rugo HS. A phase 2 randomized, double-blind, placebo-controlled trial of endocrine therapy ± radium-223 dichloride in HER2-negative, hormone receptor–positive breast cancer patients with bone metastases [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr OT1-04-04.
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Affiliation(s)
- RE Coleman
- University of Sheffield, Weston Park Hospital, Sheffield, United Kingdom; Rambam Medical Center, Haifa, Israel; Bayer HealthCare Pharmaceuticals, Whippany, NJ; UCSF Helen Diller Family Comprehensive Cancer Center, San Franciso, CA
| | - G Fried
- University of Sheffield, Weston Park Hospital, Sheffield, United Kingdom; Rambam Medical Center, Haifa, Israel; Bayer HealthCare Pharmaceuticals, Whippany, NJ; UCSF Helen Diller Family Comprehensive Cancer Center, San Franciso, CA
| | - O Petrenciuc
- University of Sheffield, Weston Park Hospital, Sheffield, United Kingdom; Rambam Medical Center, Haifa, Israel; Bayer HealthCare Pharmaceuticals, Whippany, NJ; UCSF Helen Diller Family Comprehensive Cancer Center, San Franciso, CA
| | - A Sawhney
- University of Sheffield, Weston Park Hospital, Sheffield, United Kingdom; Rambam Medical Center, Haifa, Israel; Bayer HealthCare Pharmaceuticals, Whippany, NJ; UCSF Helen Diller Family Comprehensive Cancer Center, San Franciso, CA
| | - R Li
- University of Sheffield, Weston Park Hospital, Sheffield, United Kingdom; Rambam Medical Center, Haifa, Israel; Bayer HealthCare Pharmaceuticals, Whippany, NJ; UCSF Helen Diller Family Comprehensive Cancer Center, San Franciso, CA
| | - HS Rugo
- University of Sheffield, Weston Park Hospital, Sheffield, United Kingdom; Rambam Medical Center, Haifa, Israel; Bayer HealthCare Pharmaceuticals, Whippany, NJ; UCSF Helen Diller Family Comprehensive Cancer Center, San Franciso, CA
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Van Londen M, Humalda JK, Aarts BM, Sanders JS, Bakker SJL, Navis GJ, De Borst MH, Pazik J, O Dak M, Lewandowski Z, Podgorska M, Sadowska A, Sitarek E, Malejczyk J, Durlik M, Drechsler C, Philstrom H, Meinitzer A, Pilz S, Tomaschitz A, Abedini S, Fellstrom B, Jardine A, Wanner C, Maerz W, Holdaas H, Halleck F, Staeck O, Neumayer HH, Budde K, Khadzhynov D, Rostaing L, Allal A, Congy N, Aarninck A, Del Bello A, Maggioni S, Debiols B, Sallusto F, Kamar N, Stolyarevich E, Artyukhina L, Kim I, Tomilina N, Zaidenov V, Kurenkova L, Keyzer CA, De Borst MH, Van Den Berg E, Jahnen-Dechent W, Navis G, Bakker SJL, Van Goor H, Pasch A, Aulagnon F, Avettand-Fenoel V, Scemla A, Lanternier F, Lortholary O, Anglicheau D, Legendre C, Zuber J, Furic-Cunko V, Basic-Jukic N, Coric M, Kastelan Z, Hudolin T, Kes P, Mikolasevic I, Racki S, Lukenda V, Orlic L, Dobrowolski LC, Verberne HJ, Ten Berge IJM, Bemelman FJ, Krediet CTP, Ferreira AC, Silva C, Remedio F, Pena A, Nolasco F, Heldal K, Lonning K, Leivestad 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TRANSPLANTATION CLINICAL 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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