Publications by authors named "Kruggel L"

Cyclin-dependent kinase 4/6 inhibitors (CDKIs) in combination with endocrine therapy (ET) are the standard-of-care in the first-line treatment of HR-positive, HER2-negative metastatic breast cancer. In the absence of direct head-to-head trials comparing the efficacy and safety of the different CDKIs, the individual choice of treatment in everyday practice is complex. Inverse probability of treatment weighting was used to emulate a head-to-head comparison of palbociclib +ET (PALBO) and ribociclib +ET (RIBO) in patients recruited into the prospective, observational, multicenter registry platform OPAL (NCT03417115).

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Purpose: Evidence about routine treatment and outcome of patients with invasive lobular cancer (ILC) is limited, especially regarding metastatic disease. Here we present prospective real-world data of patients with metastatic ILC (mILC) as compared to patients with metastatic invasive ductal cancer (mIDC) receiving systemic therapy in routine care in Germany.

Methods: Prospective data on patient and tumor characteristics, treatments, and outcomes of patients with mILC (n = 466) and mIDC (n = 2100), recruited between 2007 and 2021 into the Tumor Registry Breast Cancer/OPAL were analyzed.

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Importance: Mortality, morbidity, and health-related quality of life (HRQoL) are patient-relevant end points generally considered in the early benefit assessments of new cancer treatments. Progression-related end points, such as time to progression or progression-free survival, are not included, although patients and physicians testify to the detrimental association of disease progression with HRQoL.

Objective: To examine the association of disease progression and HRQoL in 4 prevalent solid-cancer entities in routine clinical practice.

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Non-clear cell renal cell carcinoma is a very rare malignancy that includes several histological subtypes. Each subtype may need to be addressed separately regarding prognosis and treatment; however, no Phase III clinical trial data exist. Thus, treatment recommendations for patients with non-clear cell metastatic RCC (mRCC) remain unclear.

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Purpose: Quality of life (QoL) plays an important role in recovery-especially after an incisive diagnosis such as breast cancer. Here, we present a comprehensive assessment of QoL for pre- and postmenopausal patients, starting from initial systemic treatment of early breast cancer until 3 years later, in patients from a so-called "real-world" setting.

Methods: 251 premenopausal and 478 postmenopausal patients with early breast cancer have been recruited into the longitudinal MaLife project within the prospective, multicentre, German Tumour Registry Breast Cancer between 2011 and 2015.

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Introduction: Because the treatment landscape for metastatic renal cell carcinoma (mRCC) has evolved dramatically over the past decade, data on patients' treatment and outcomes in routine practice, so called "real-world data," are important to complement clinical trial data. We present choice of systemic first-/second-line treatments, number and sequences of treatment lines, and survival of patients with clear cell mRCC.

Patients And Methods: A total of 1085 patients with clear cell mRCC who were recruited at the start of first-line treatment into the prospective German clinical cohort study (RCC-Registry) by 122 sites between December 2007 and May 2017 were analyzed.

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Background: Several regimens for which efficacy was established in randomized controlled trials are recommended in current treatment guidelines for early breast cancer. However, knowledge on use and effectiveness of commonly administered chemotherapeutic agents in real-life care and across all breast cancer subtypes is limited.

Methods: The prospective, multicentre German TMK cohort study (Tumour Registry Breast Cancer) recruited patients in 148 oncology outpatient-centres.

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Purpose: There is an ongoing discussion about 'undertreatment' of breast cancer in elderly patients. Due to low accrual into clinical trials, level 1 evidence is scarce. We report prospective data of elderly patients with breast cancer treated by medical oncologists in Germany.

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Purpose: Although treatment for early breast cancer improved prognosis greatly, it can have significant long-term consequences, which must be considered during treatment decision.

Methods: 453 patients with neoadjuvant or adjuvant treatment intention were recruited into the MaTox project within the prospective, multicentre, population-based German TMK cohort study (Tumour Registry Breast Cancer) between 2008 and 2009. Patient-reported outcomes (PROs) on 26 treatment-related symptoms were assessed via a specifically designed questionnaire at 4 weeks, 6 months, 18 months and 3 years after start of systemic treatment.

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Data on treatment and outcome of advanced breast cancer in routine practice are rare, especially concerning recurrent disease, but important to complement the results from clinical trials and to improve the standard of care. We present data on choice of systemic first-line treatment, number of treatment lines, and survival of patients treated by medical oncologists in Germany. 1395 patients recruited by 124 sites at start of first-line therapy into the ongoing, prospective German clinical cohort study TMK (Tumour Registry Breast Cancer) between February 2007 and October 2015 were analysed.

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