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  • 1
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2016
    In:  Journal of Clinical Oncology Vol. 34, No. 15_suppl ( 2016-05-20), p. e16586-e16586
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 34, No. 15_suppl ( 2016-05-20), p. e16586-e16586
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2016
    detail.hit.zdb_id: 2005181-5
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  • 2
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2017
    In:  Journal of Clinical Oncology Vol. 35, No. 15_suppl ( 2017-05-20), p. e16514-e16514
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 35, No. 15_suppl ( 2017-05-20), p. e16514-e16514
    Abstract: e16514 Background: Abiraterone acetate (AA) prolongs survival in men with mCRPC in the pre- and post chemotherapy setting and is mainly used in asymptomatic men. In the first 12 weeks an early rise of prostate specific antigen (PSA) may occur followed by either delayed decline (PSA-flare) or true progression. Bouncing of alkaline phosphatase (ALP-Bouncing) was shown to be a promising marker for outcome and response during very early AA therapy. This retrospective study was conducted to analyze the capability of ALP-Bouncing to predict overall survival (OS) in men with bone mCRPC (bmCRPC) with rising PSA after initiation of AA therapy. Methods: Men with bmCRPC and rising PSA during early AA therapy were includeded and analyzed. PSA response rate (RR) was monitored according to PCWG2 criteria and assessed 12 weeks after start of AA treatment. PSA-flare vs. no flare and ALP-Bouncing vs. no Bouncing were analyzed using Kaplan-Meyer estimates and uni- and multivariate (UV/MV) cox-regression models. ALP-Bouncing was defined as increase of ALP after the beginning of AA with a subsequent significant decline below baseline during the first 8 weeks of therapy. Results: Forty men were evaluable for analysis: 20 men were chemotherapy naïve, 20 pretreated with docetaxel. The PSA RR was 30%. The median survival for ALP-Bouncing was 20 months (95% confidence interval (95%CI): 4.7-13.3) vs. 9 months (95%CI not distinguishable) for no ALP-bouncing (p = 0.04) and 13 months (95%CI: 8.8-17.2) for PSA-flare vs. 9 months (95%CI 4.4-13-6) for no PSA-flare (p = 0.62). In UV no ALP-bouncing was significantly associated with worse OS (Hazard Ratio (HR): 2.65 (95%CI: 1.0-7.0); p = 0.05). After adjustment for PSA-flare no AP-bouncing remained an independent prognosticator of worse OS (HR: 2.78 (95%CI: 1.0-7.71); p = 0.05). Conclusions: ALP-Bouncing, occurring earlier than delayed PSA-decline, may be a helpful marker to identify patients with subsequent favorable outcome in men with bmCRPC and rising PSA after initiation of AA therapy. These results have to be validated in a prospective trial.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2017
    detail.hit.zdb_id: 2005181-5
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  • 3
    In: Clinical Cancer Research, American Association for Cancer Research (AACR), Vol. 29, No. 8 ( 2023-04-14), p. 1496-1505
    Abstract: The antibody–drug conjugate enfortumab vedotin (EV) releases a cytotoxic agent into tumor cells via binding to the membrane receptor NECTIN-4. EV was recently approved for patients with metastatic urothelial carcinoma (mUC) without prior assessment of the tumor receptor status as ubiquitous NECTIN-4 expression is assumed. Our objective was to determine the prevalence of membranous NECTIN-4 protein expression in primary tumors (PRIM) and patient-matched distant metastases (MET). Experimental Design: Membranous NECTIN-4 protein expression was measured (H-score) by IHC in PRIM and corresponding MET (N = 137) and in a multicenter EV-treated cohort (N = 47). Progression-free survival (PFS) after initiation of EV treatment was assessed for the NECTIN-4–negative/weak (H-score 0–99) versus moderate/strong (H-score 100–300) subgroup. The specificity of the NECTIN-4 IHC staining protocol was validated by establishing CRISPR-Cas9–induced polyclonal NECTIN-4 knockouts. Results: In our cohort, membranous NECTIN-4 expression significantly decreased during metastatic spread (Wilcoxon matched pairs P & lt; 0.001; median H-score = 40; interquartile range, 0–140), with 39.4% of MET lacking membranous NECTIN-4 expression. In our multicenter EV cohort, absence or weak membranous NECTIN-4 expression (34.0% of the cohort) was associated with a significantly shortened PFS on EV (log-rank P & lt; 0.001). Conclusions: Membranous NECTIN-4 expression is frequently decreased or absent in mUC tissue. Of note, the clinical benefit of EV strongly depends on membranous NECTIN-4 expression. Thus, our results are of highest clinical relevance and argue for a critical reconsideration of the current practice and suggest that the NECTIN-4 receptor status should be determined (ideally in a metastatic/progressive lesion) before initiation of EV. See related commentary by Aggen et al., p. 1377
    Type of Medium: Online Resource
    ISSN: 1078-0432 , 1557-3265
    RVK:
    Language: English
    Publisher: American Association for Cancer Research (AACR)
    Publication Date: 2023
    detail.hit.zdb_id: 1225457-5
    detail.hit.zdb_id: 2036787-9
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  • 4
    In: European Journal of Nuclear Medicine and Molecular Imaging, Springer Science and Business Media LLC, Vol. 48, No. 4 ( 2021-04), p. 1200-1210
    Abstract: [ 177 Lu]Lu-PSMA-617 (Lu-PSMA) radioligand therapy is an emerging treatment option for patients with end-stage prostate cancer. However, response to Lu-PSMA therapy is only achieved in approximately half of patients. It is clinically important to identify patients at risk of poor outcome. Therefore, the aim of this study was to evaluate pretherapeutic PSMA PET derived total tumor volume and related metrics as prognosticators of overall survival in patients receiving Lu-PSMA therapy. Methods A total number of 110 patients form the Departments of Nuclear Medicine Münster and Essen were included in this retrospective analysis. Baseline PSMA PET-CT was available for all patients. Employing a previously published approach, all tumor lesions were semi-automatically delineated in PSMA PET-CT acquisitions. Total lesion number, total tumor volume (PSMA-TV), total lesion uptake (PSMA-TLU = PSMA-TV * SUV mean ), and total lesion quotient (PSMA-TLQ = PSMA-TV / SUV mean) were quantified for each patient. Log2 transformation was used for regressions. Results Lesion number, PSMA-TV, and PSMA-TLQ were prognosticators of overall survival (HR = 1.255, p  = 0.009; HR = 1.299, p  = 0.005; HR = 1.326, p  = 0.002). In a stepwise backward Cox regression including lesion number, PSMA-TV, PSA, LDH, and PSMA-TLQ, only the latter two remained independent and statistically significant negative prognosticators of overall survival (HR = 1.632, p  = 0.011; HR = 1.239, p  = 0.024). PSMA-TLQ and LDH were significant negative prognosticators in multivariate Cox regression in contrast to PSA value. Conclusion PSMA-TV was a statistically significant negative prognosticator of overall survival in patients receiving Lu-PSMA therapy. PSMA-TLQ was an independent and superior prognosticator of overall survival compared with PSMA-TV.
    Type of Medium: Online Resource
    ISSN: 1619-7070 , 1619-7089
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2098375-X
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  • 5
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 39, No. 15_suppl ( 2021-05-20), p. e17032-e17032
    Abstract: e17032 Background: Biomarkers predicting response to mCRPC treatment are rare. CTCs and AR-V7 status have been discussed as potential prognosticators. Methods: We evaluated 64 patients (pts.) treated with abiraterone (n=47) or enzalutamide (n=17), determined CTCs and analyzed AR-V7 status in correlation with survival using Kaplan-Meier-estimates and Cox-regression-models. Results: For PSA response, CTC- vs. CTC+ were not different (p=0.25) whereas AR-V7 status was predictive (68.2% AR-V7- and 33.3% AR-V7+ pts. (p=0.01)). Median PSA PFS was 17 mo. (CI 9.5-24.5) for CTC- and 6 (CI 5.2-6.9) for CTC+ pts. (p 〈 0.01) with 9 mo. (CI 4.2-13.8) for CTC+/AR-V7- and 5 (CI 3.0–7.0) for CTC+/AR-V7+ pts. (p=0.04). In univariate cox regression analysis (UV), prior abiraterone or enzalutamide (A/E) (p=0.01), bone metastases (p=0.03), CTC+ (p=0.01), AR-V7+ (p=0.01), Hb ≤12 g/dl (p=0.01) and PSA decline ≥50% (p 〈 0.01) were significant prognosticators. Within the CTC+ subgroup, AR-V7+ (p=0.02) and PSA decline ≥50% (p=0.03) showed a relevant difference. In multivariate analysis (MV), for CTC+ pts, AR-V7+ (p=0.02), PSA decline ≥50% (p=0.02) and visceral metastases (p=0.02) remained independent prognosticators. The analysis for PFS resulted in 22 mo. (CI NA) for CTC- compared to 9 (CI 7.7-10.3) for CTC+ (p=0.01) and 10 mo. (CI 8.2-11.8) for CTC+/AR-V7- vs. 6 (CI 1.9-10.1) for CTC+/AR-V7+ (p=0.07). Performing UV, prior A/E (p 〈 0.01), CTC+ (p=0.01), AR-V7+ (p=0.01), Hb ≤12 (p 〈 0.01), PSA decline ≥50% (p 〈 0.01) and ALP elevated at baseline (p=0.03) showed statistically significant differences. Within the CTC+ subgroup, prior A/E (p=0.01), visceral metastases (p=0.02), Hb ≤12 (p=0.01) and PSA decline ≥50% (p=0.03) were significant prognosticators, whereas AR-V7+ was not. In MV of CTC+ pts, visceral metastases (p=0.02), PSA decline ≥50% (p=0.02) and Hb ≤12 (p=0.05) remained independent prognosticators. Median OS was not reached for CTC- and 17 mo. (CI 9.8–24.2) for CTC+ (p 〈 0.01) with 27 (CI 10.6-43.4) vs. 14 (CI 10.4-17.7) mo. for AR-V7- and AR-V7+, respectively (p=0.06). UV resulted in statistically relevant differences for prior docetaxel (p=0.01), prior A/E (p 〈 0.01), visceral metastases (p=0.02), CTC+ (p=0.01), AR-V7+ (p 〈 0.01) and Hb ≤12 (p 〈 0.01). Within CTC+, prior docetaxel (p 〈 0.01), prior A/E (p=0.01), visceral metastases (p 〈 0.01) and Hb ≤12 (p 〈 0.01) were statistically relevant parameters. UV for AR-V7 status did not result in a significant difference for OS either. In MV, CTC status as well as Hb ≤12 remained independent prognosticators (p=0.04 and p 〈 0.01, respectively). For MV of CTC+, visceral metastases (p=0.01), Hb ≤12 (p 〈 0.01) and prior docetaxel (p=0.01) were independent prognosticators of OS. Conclusions: Presence of CTCs seems to prognosticate PFS and OS in mCRPC patients undergoing Androgen-deprivation while presence of AR-V7 does not despite its predictive potential.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2021
    detail.hit.zdb_id: 2005181-5
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  • 6
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 38, No. 15_suppl ( 2020-05-20), p. e17547-e17547
    Abstract: e17547 Background: Playing an important role in prostate cancer, androgen receptor (AR) signaling is a common therapeutic target. Novel hormonal treatment (NHT) using enza or abi prolongs overall survival in men with metastatic castration-resistant prostate cancer (mCRPC). However, biomarkers predicting therapy response are limited. AR-V7, as the most abundant AR splice variant, has gained clinical interest. Nonetheless, current discussions on its predictive power are diverse. Given that AR-V7 as a sole biomarker is not efficient in predicting response to NHT, we aimed to increase the predictive potential by analysis of combinatorial AR splice variant (AR-V) expression in mCRPC patients undergoing NHT. Methods: We prospectively enrolled 60 patients who started on either abi or enza. Presence of circulating tumor cells (CTC) as well as expression of AR-V3, -7 and -9 were assessed. Outcomes in CTC-, CTC+/AR-V- and CTC+/AR-V+ patients were analyzed considering PSA reduction, PSA-PFS, PFS and OS. Results: PSA reduction of 50% was predominantly found in CTC- patients (78.5%) compared to CTC+/AR-V- (55.5%) and CTC+/AR-V+ (39.3%) without statistical significance (P = 0.059). When taking co-expression of two or more AR-V into account there was no difference in PSA response either (one AR-V 42.9%, two AR-V 33.3%, three AR-V 41.6%, P = 0.154). Median PSA-PFS was 17 months (95%CI 15.7 – 18.3), 13 months (95%CI 6.8 – 19.2) and 5 months (95%CI 3.6 – 6.4) for CTC- pts, CTC+/AR-V- pts and CTC+/AR-V+ pts, respectively (P = 0.005). However, comparing CTC- and CTC+ pts, differences become even more apparent (P = 0.004), CTC+/AR-V- and AR-V+ pts showed less statistically significant differences (P = 0.029). Median PFS and OS were not reached for CTC- pts. PFS was 10 months (95%CI 6.2 – 13.8) for CTC+/AR-V- pts and 9 months (95%CI 1.1 – 16.9) for CTC+/AR-V+ pts (P = 0.004, only CTC- vs. CTC+ P = 0.002). OS was 28 months (95%CI 16.8 – 39.2) for CTC+/AR-V- pts and 15 months (95%CI 7.9 – 22.1) for CTC+/AR-V+ pts (P = 0.014, only CTC- vs. CTC+ P = 0.006). Regarding PFS and OS, there was no difference comparing only CTC+/AR-V- and AR-V+ pts (P = 0.356 and P = 0.244). Conclusions: AR splice variants have prognostic power in stratifying mCRPC patients suffering from a more advanced stage of disease. Nonetheless, our study clearly demonstrates the lack of predictive power of AR splice variants for response to NHT. Additionally, we prove the importance of CTC analysis rather than AR-V expression being more valuable in mCRPC.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2020
    detail.hit.zdb_id: 2005181-5
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  • 7
    Online Resource
    Online Resource
    American Society of Clinical Oncology (ASCO) ; 2017
    In:  Journal of Clinical Oncology Vol. 35, No. 15_suppl ( 2017-05-20), p. e16507-e16507
    In: Journal of Clinical Oncology, American Society of Clinical Oncology (ASCO), Vol. 35, No. 15_suppl ( 2017-05-20), p. e16507-e16507
    Abstract: e16507 Background: Enzalutamide (Enza) prolongs survival in men with mCRPC in pre- and post chemotherapy setting. Commonly used prostate-specific antigen (PSA) may lead to non-straightforward prognosis. This is especially true for bone mCRPC (bmCRPC) in which initial bone-flare may add to difficult decision making. During other therapies, bouncing of alkaline phosphatase (ALP-Bounce) was shown as a promising surrogate for survival outcome. The purpose of this study was to evaluate the prognostic ability of ALP-Bounce compared to standard PSA and lactate dehydrogenase (LDH) after initiation of Enza. Methods: Patients with bmCRPC were included and analyzed. PSA, LDH and ALP were monitored at 2, 4, 8 and 12 weeks under very early Enza treatment. ALP-Bounce vs. no Bounce was analyzed using Kaplan-Meier estimates and uni- and multivariate (UV/MV) cox-regression models. ALP-Bounce was defined as an increase of ALP after initiation of Enza with a subsequent, significant decline below baseline during the first 8 weeks of therapy. Results: Eighty-nine men were evaluable for analysis. The median overall survival (OS) of men with ALP-Bounce was 19 months (95% confidence interval: 7.9-30.1) compared to 12 months (7.7-16.3) for no Bounce. Analysis of progression-free survival (PFS) showed similar results with 8 (0-16.3) vs. 3 months (1.9-4.1). In UV no ALP-Bounce (Hazard Ratio (HR): 1.9 (1.1-3.3); p = 0.02), no PSA-decline ≥50% (HR: 2.3 (1.5-3.7); p 〈 0.01) and no LDH-Normalization (HR: 2.5 (1.6-4.1); p 〈 0.01) were significantly associated with worse PFS. In MV only no ALP-Bounce showed a trend towards worse PFS (HR: 2.1 (0.9-4.5); p = 0.09). In UV no LDH-normalization was a significant prognosticator of poor OS (HR: 2.6 (1.6-4.2); p 〈 0.01) while ALP-Bounce and PSA decline ≥50% were non-prognostic. In MV no LDH-normalization remained an independent prognosticator of poor OS (HR: 2.0 (1.1.-3.5); p = 0.02). Conclusions: ALP-Bounce and LDH-Normalization may add to identification of bmCRPC-patients with favorable prognosis during early therapy with Enza. The early occurence of ALP-Bounce might be beneficial. These results have to be validated in a prospective trial.
    Type of Medium: Online Resource
    ISSN: 0732-183X , 1527-7755
    RVK:
    RVK:
    Language: English
    Publisher: American Society of Clinical Oncology (ASCO)
    Publication Date: 2017
    detail.hit.zdb_id: 2005181-5
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  • 8
    In: Intensive Care Medicine, Springer Science and Business Media LLC, Vol. 35, No. 7 ( 2009-7), p. 1286-1296
    Type of Medium: Online Resource
    ISSN: 0342-4642 , 1432-1238
    RVK:
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2009
    detail.hit.zdb_id: 1459201-0
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  • 9
    In: Future Oncology, Future Medicine Ltd, Vol. 17, No. 18 ( 2021-06), p. 2325-2338
    Abstract: Aim: Examine outcomes in sunitinib-treated patients by International Metastatic RCC Database Consortium (IMDC) or Memorial Sloan-Kettering Cancer Center (MSKCC) risk factors. Patients &  methods: Patients enrolled in STAR-TOR registry (n = 327). End points included overall survival, progression-free survival and objective response rate. Results: Overall survival was similar for IMDC 0 versus 1 (p = 0.238) or 2 versus ≥3 (p = 0.156), but different for MSKCC (0 vs 1, p = 0.037; 2 vs ≥3, p = 0.001). Progression-free survival was similar for IMDC 2 versus 3 (p = 0.306), but different for MSKCC (p = 0.009). Objective response rate was different for IMDC 1 (41.9%) and 2 (29.5%) and similar for MSKCC 1 (34.4%) and 2 (31.0%). Conclusion: Outcome data varied according to IMDC or MSKCC. MSKCC model accurately stratify patients into risk groups. Clinical trial registration: NCT00700258 (ClinicalTrials.gov)
    Type of Medium: Online Resource
    ISSN: 1479-6694 , 1744-8301
    Language: English
    Publisher: Future Medicine Ltd
    Publication Date: 2021
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  • 10
    In: Scientific Reports, Springer Science and Business Media LLC, Vol. 12, No. 1 ( 2022-07-13)
    Abstract: Biomarker in metastatic castration resistant prostate cancer (mCRPC) treatment are rare. We aimed to compare the clinical value of circulating tumor cells (CTCs) and androgen receptor splice variant 7 (AR-V7) as biomarker in mCRPC patients undergoing androgen receptor-targeted agent (ARTA) treatment. Overall cohort (65 patients) was stratified regarding either CTC or AR-V7 status followed by further sub-stratification of the respective other marker. Subsequently, prostate specific antigen (PSA) response, progression free survival (PFS) and overall survival (OS)) of subgroups was compared. CTCs and AR-V7 were detected in 54 (83%) and 33 (61%) patients, respectively. All AR-V7 + were CTC +. We detected PSA response in all subgroups. For PFS and OS, biomarker stratification revealed differences between all subgroups. Interestingly, no significant differences of AR-V7 transcript copy numbers were detected between responding and non-responding patients. Additionally, multivariable analysis revealed no independent prognostic value of AR-V7 positivity. Both biomarkers show clinical value in prognosticating clinical outcome. Nonetheless, AR-V7 stratification underestimates the heterogenous subgroup of CTC − and CTC + patient, the latter requiring more intense clinical surveillance. Additionally, AR-V7 level does not correlate with clinical response. Thus, the value of AR-V7 as a clinical biomarker must be considered skeptically.
    Type of Medium: Online Resource
    ISSN: 2045-2322
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 2615211-3
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