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1.
Ann Oncol ; 34(6): 531-542, 2023 06.
Article in English | MEDLINE | ID: mdl-37062416

ABSTRACT

BACKGROUND: In high-risk hormone receptor-positive/human epidermal growth factor receptor 2-negative (HR+/HER2-) early breast cancer (EBC), nanoparticle albumin-bound (nab)-paclitaxel showed promising efficacy versus solvent-based (sb)-paclitaxel in neoadjuvant trials; however, optimal patient and therapy selection remains a topic of ongoing research. Here, we investigate the potential of Oncotype DX® recurrence score (RS) and endocrine therapy (ET) response (low post-endocrine Ki67) for therapy selection. PATIENTS AND METHODS: Within the WSG-ADAPT trial (NCT01779206), high-risk HR+/HER2- EBC patients were randomized to (neo)adjuvant 4× sb-paclitaxel 175 mg/m2 q2w or 8× nab-paclitaxel 125 mg/m2 q1w, followed by 4× epirubicin + cyclophosphamide (90 mg + 600 mg) q2w; inclusion criteria: (i) cN0-1, RS 12-25, and post-ET Ki67 >10%; (ii) cN0-1 with RS >25. Patients with cN2-3 or (G3, baseline Ki67 ≥40%, and tumor size >1 cm) were allowed to be included without RS and/or ET response testing. Associations of key factors with pathological complete response (pCR) (primary) and survival (secondary) endpoints were analyzed using statistical mediation and moderation models. RESULTS: Eight hundred and sixty-four patients received neoadjuvant nab-paclitaxel (n= 437) or sb-paclitaxel (n = 427); nab-paclitaxel was superior for pCR (20.8% versus 12.9%, P = 0.002). pCR was higher for RS >25 versus RS ≤25 (16.0% versus 8.4%, P = 0.021) and for ET non-response versus ET response (15.1% versus 6.0%, P = 0.027); no factors were predictive for the relative efficacy of nab-paclitaxel versus sb-paclitaxel. Patients with pCR had longer distant disease-free survival [dDFS; hazard ratio 0.42, 95% confidence interval (CI) 0.20-0.91, P = 0.024]. Despite favorable prognostic association of RS >25 versus RS ≤25 with pCR (odds ratio 3.11, 95% CI 1.71-5.63, P ≤ 0.001), higher RS was unfavorably associated with dDFS (hazard ratio 1.03, 95% CI 1.01-1.05, P = 0.010). CONCLUSIONS: In high-risk HR+/HER2- EBC, neoadjuvant nab-paclitaxel q1w appears superior to sb-paclitaxel q2w regarding pCR. Combining RS and ET response assessment appears to select patients with highest pCR rates. The disadvantage of higher RS for dDFS is reduced in patients with pCR. These are the first results from a large neoadjuvant randomized trial supporting the use of RS to help select patients for neoadjuvant chemotherapy in high-risk HR+/HER2- EBC.


Subject(s)
Breast Neoplasms , Humans , Female , Breast Neoplasms/drug therapy , Breast Neoplasms/genetics , Breast Neoplasms/metabolism , Epirubicin/therapeutic use , Neoadjuvant Therapy/methods , Solvents/therapeutic use , Ki-67 Antigen , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Paclitaxel/therapeutic use , Albumins/therapeutic use , Cyclophosphamide/therapeutic use , Receptor, ErbB-2/genetics , Receptor, ErbB-2/metabolism
2.
Breast Cancer Res Treat ; 64(3): 275-86, 2000 Dec.
Article in English | MEDLINE | ID: mdl-11200778

ABSTRACT

OBJECTIVE: This study describes in detail the surgery-related symptoms following axillary lymph node dissection in breast cancer patients and considers both their significance for long term quality of life and the impact of possible influencing factors. MATERIAL AND METHODS: Three hundred and ninety six patients were studied retrospectively using a self-report questionnaire and a clinical examination. The symptoms, numbness, pain, edema, arm strength and mobility were evaluated. The subjective assessment of the degree of symptom intensity was compared with objective measurements. The extent of surgery (number of resected nodes, level of dissection) as well as the influence of demographic, oncologic and adjuvant measures (age, time interval, number of involved nodes, chemotherapy) were evaluated. RESULTS: Shoulder-arm morbidity and fear of cancer recurrence were the most important long-term sources of distress following breast cancer surgery in our study population. Demographic, oncologic and therapeutic measures including the extent of surgery had no influence on long-term morbidity. The intensity of all evaluated symptoms was reported to be more severe in patients' subjective statements than in the results of clinical assessment. CONCLUSION: Shoulder-arm morbidity following axillary dissection is a frustrating polysymptomatic disease that seems to be relatively unaffected by therapeutic measures. The surgical trauma necessary for adequate tumor staging (removal of 10 lymph nodes) seems decisive for the postsurgery syndrome following axillary dissection. For node-positive patients complete axillary clearing may improve tumor control without worsening long-termmorbidity. New techniques, such as the sentinel-node-biopsy, that selects patients with negative axillary status while preserving the integrity of axillary structures, may improve the overall morbidity.


Subject(s)
Breast Neoplasms/epidemiology , Lymph Node Excision , Lymph Nodes/surgery , Quality of Life , Adult , Aged , Aged, 80 and over , Axilla , Breast Neoplasms/surgery , Diagnosis, Differential , Female , Humans , Mastectomy , Middle Aged , Morbidity , Prognosis , Surveys and Questionnaires
3.
Leukemia ; 13(11): 1873-80, 1999 Nov.
Article in English | MEDLINE | ID: mdl-10557065

ABSTRACT

Glucocorticoids and fludarabine are able to induce typical features of apoptosis in CLL lymphocytes. Cysteinyl aspartate specific proteases (caspases) play a key biochemical role in the apoptotic pathway. Caspase activation following cytotoxic stimuli leads to highly specific proteolytic cleavage of functionally important cellular enzymes. One of them is poly ADP-ribose) polymerase (PARP). To some extent caspase activation seems to be under the control of the Bcl-2 family of interacting proteins. We determined the role of Bcl-2-family proteins Bcl-2 (anti-apoptotic) and Bax (pro-apoptotic), activation of caspase-3 (CPP32/Yama) and activation of PARP in CLL apoptosis. All 21 analyzed CLL samples expressed Bcl-2 and Bax. Four of 13 (31%) samples with a low Bcl-2/Bax ratio exhibited in vitro prednisolone resistance, whereas eight of nine (88%) samples with a high Bcl-2/Bax ratio were in vitro resistant (

Subject(s)
Antineoplastic Agents/pharmacology , Apoptosis/drug effects , Caspases/metabolism , Leukemia, Lymphocytic, Chronic, B-Cell/enzymology , Leukemia, Lymphocytic, Chronic, B-Cell/pathology , Aged , Aged, 80 and over , Amino Acid Chloromethyl Ketones/pharmacology , Antineoplastic Agents/antagonists & inhibitors , Antineoplastic Agents/therapeutic use , B-Lymphocytes/drug effects , B-Lymphocytes/enzymology , B-Lymphocytes/metabolism , B-Lymphocytes/pathology , Benzamides/pharmacology , Blotting, Western , Caspase 3 , Caspase Inhibitors , DNA Fragmentation/drug effects , Drug Screening Assays, Antitumor , Enzyme Activation/drug effects , Female , Gene Expression/drug effects , Humans , Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy , Leukemia, Lymphocytic, Chronic, B-Cell/metabolism , Male , Middle Aged , Poly(ADP-ribose) Polymerase Inhibitors , Poly(ADP-ribose) Polymerases/metabolism , Proto-Oncogene Proteins/biosynthesis , Proto-Oncogene Proteins c-bcl-2/biosynthesis , Tumor Cells, Cultured , bcl-2-Associated X Protein
4.
Anticancer Res ; 19(4A): 2421-5, 1999.
Article in English | MEDLINE | ID: mdl-10470169

ABSTRACT

Human chorionic gonadotropin (HCG) is expressed in germ cell tumors and urothelial, breast, lung and colon cancers. The aim of the study was to investigate if the determination of HCG in comparison with CEA is able to discriminate between malignant and benign effusions. Effusion and partially serum samples of 61 patients with benign (g.i., heart/kidney isnuff.) and 116 patients with malignant diseases (g.i., gynec., lung, misc., CUP) were investigated. HCG was specifically determined by an IRMA using 2 monoclonal antibodies, CEA by a conventional double Ab RIA. Cytological staining was preformed using the Pappenheim-method on cytospin preparations. Significant differences (p < 0.001) were found for HCG between benign and malignant ascitic effusions with the best discrimination at 5 IU/l (ROC) and an overall sensitivity of 31.3% (spec. vs benign eff. 93.4%) increasing in subgroups from hematol. (5.8%) < misc. (31.3%) < gynec. (32.1%) < g.i. (36%) < lung (38.1%) to CUP (50%). CEA also showed significant differences between benign and malignant total and ascitic effusions, and weaker for the pleural subgroup (cutoff 9 ng/ml) with a total sensitivity of 44.6% (sp = 100%) increasing from misc. (30.8%) < lung (47.1%) < CUP (50%) < gynec. (60%) < g.i. (60.9%). Comparative cytology and TM determinations increased the positiverate of cytology (45.2%) to 58.3% for either cytology or HCG positive cases, or to 61.6% for either cytology or CEA positive cases. For the combined determination of cytologoy and HCG and CEA, the overall TM positive rate for 33 cytology-pos. cases was 78.8%, but in 40 cytology-negative cases 37.5% for TM positive cases. In conclusion HCG is useful in ascitic > pleural effusions with high specificity (90% at 5 IU/l) but low sensitivity of 31% increasing in g.i., lung and gynecologic cases, CEA a more general TM with higher sensitivity of 45% increasing in g.i., gynecologic and lung cases (sp. 100% at 9 ng/ml) both adding significantly to cytology-negative effusions.


Subject(s)
Biomarkers, Tumor/analysis , Carcinoembryonic Antigen/analysis , Chorionic Gonadotropin/analysis , Exudates and Transudates/chemistry , Neoplasms/diagnosis , Biomarkers, Tumor/blood , Carcinoembryonic Antigen/blood , Chorionic Gonadotropin/blood , Diagnosis, Differential , Female , Gastrointestinal Diseases/blood , Gastrointestinal Diseases/diagnosis , Humans , Kidney Diseases/blood , Kidney Diseases/diagnosis , Male , Neoplasms/blood , Neoplasms/physiopathology , ROC Curve , Sensitivity and Specificity
5.
Oncol Rep ; 6(2): 455-8, 1999.
Article in English | MEDLINE | ID: mdl-10023021

ABSTRACT

The diagnosis of malignancy in peritoneal and pleural effusions can be difficult, because activated mesothelial cells may resemble malignant cells. P53 mutations are the most frequent genetic changes in human cancer and translate into an overexpression of the p53 protein detectable by immunocytochemistry. In this study, we investigated the sensitivity and specificity of 4 different monoclonal antibodies (moAB) against p53 for the diagnosis of malignancy in effusions. We also compared p53 staining with CEA immunocytochemistry which previous work had established as a specific marker of malignancy in body cavity effusions. Normal and malignant cells from 28 benign and 52 malignant effusions (pleura and ascites) were examined by indirect immuno-alkaline phosphatase method. Four different moAB against p53 (PAB 1801, PAB 240, DO-1 and DO-7) and one moAB against CEA (CEA-84) were used. Antibodies p1801, p240 and DO-1 react with 52-75% of cases of effusions with malignant cells, but also with 38-80% of benign effusions. Only the antibody DO-7 and the CEA moAB show specificity for malignant cells reacting respectively with 20 (55%) of cases. A combination of these 2 markers does not enhance the sensitivity for the detection of tumor cells. No direct correlation between CEA and p53 immunostaining could be established. The sensitivity and specificity of staining p53 in malignant cells by immunocytochemistry depend strongly on the antibody used. Some p53 moAB are positive with reactive cells in ascites and pleural effusions. Currently, p53 staining of expressing cells does not improve the identification of malignant cells in comparison with CEA immunocytochemistry, but may help to screen for patients with p53 mutations.


Subject(s)
Ascites/pathology , Carcinoembryonic Antigen/analysis , Neoplasms/pathology , Pleural Effusion, Malignant/pathology , Pleural Effusion/pathology , Tumor Suppressor Protein p53/analysis , Antibodies, Monoclonal , Breast Neoplasms/pathology , Colonic Neoplasms/pathology , Female , Humans , Lung Neoplasms/pathology , Mesothelioma/pathology , Stomach/pathology
6.
Leukemia ; 10 Suppl 3: S18-S22, 1996 Jul.
Article in English | MEDLINE | ID: mdl-8656695

ABSTRACT

Bcl-2 expression is able to confer drug resistance to chemotherapy-induced programmed cell death. Bax, a partner protein of bcl-2 with extensive aminoacid homology, is a promoter of apoptosis. Apparently the equilibrium of bcl-2 and bax hetero- and homodimers is important for the susceptibility of cells for stimuli inducing apoptosis. In this study we determined the role of bcl-2 to bax expression ratio, bcl-xL and ICE expression level for predicting clinical response to chemotherapy in acute myelold leukemia (AML). Bone marrow samples from 14 patients with AML were examined using an immunophosphatase staining method. Initial bone marrow blast portion was over 80% in all cases. Clinical response was defined by bone marrow aspiration 4 weeks after treatment initiation. There was a significant correlation between bcl-2 to bax expression ratio and clinical response (P < 0.005). No patients with a bcl-2/bax ratio >1.0 achieved complete remission after induction therapy. No significant correlation between bcl-2- and p-glycoprotein-expression was observed in this group. Conversely a high expression of ICE indicated a good clinical response (P < 0.01), whereas expression of bcl-xL had no influence on therapeutic success in this group.


Subject(s)
Cysteine Endopeptidases/biosynthesis , Gene Expression Regulation, Enzymologic , Gene Expression Regulation, Neoplastic , Leukemia, Myeloid/enzymology , Leukemia, Myeloid/genetics , Proto-Oncogene Proteins/biosynthesis , ATP Binding Cassette Transporter, Subfamily B, Member 1/biosynthesis , Acute Disease , Adult , Aged , Caspase 1 , Female , Humans , Leukemia, Myeloid/drug therapy , Male , Middle Aged , Predictive Value of Tests
7.
Cancer Immunol Immunother ; 42(3): 200-1, 1996 Mar.
Article in English | MEDLINE | ID: mdl-8640849

ABSTRACT

Mutated human p53 may give rise to the formation of autoantibodies and may be a marker for a worse prognosis. We speculated that ascites or pleural effusions may enhance the formation of such autoantibodies in cancer patients and, therefore, we measured the presence of autoantibodies in the ascites or pleural effusion of 40 patients with advanced malignancies. As controls, p53 autoantibodies were measured in 15 patients with effusions who did not have a malignancy. Using a specific enzyme-linked immunosorbent assay, p53 autoantibodies could only be detected in the effusions of 5/40 patients (12.5%) with known malignancies. The formation of autoantibodies did not correlate with the presence or absence of tumor cells in the effusion. The effusions of the patients without tumor were all negative for p53 autoantibodies. Our study shows that malignant or reactive effusions do not stimulate the local or systemic production of autoantibodies against p53.


Subject(s)
Antigens, Neoplasm/analysis , Ascites/immunology , Autoantibodies/analysis , Pleural Effusion, Malignant/chemistry , Tumor Suppressor Protein p53/immunology , Antibody Specificity , Enzyme-Linked Immunosorbent Assay , Humans
8.
Med Klin (Munich) ; 89(5): 248-51, 1994 May 15.
Article in German | MEDLINE | ID: mdl-8052178

ABSTRACT

PATIENTS AND METHOD: The expression of TGF-beta-3 was examined in 64 patients with reactive and malignant effusion by immunocytochemistry. RESULT: In about half of the patients with malignant effusions (especially breast cancer, gastric cancer, and carcinomas of unknown primary) TGF-beta positive tumor cells could be detected. We could show here for the first time that reactive mesothelial cells could also express TGF-beta. Lymphatic cells were negative in all cases. TGF-beta-3 bioactivity could also be detected in the effusions studied. In our group of patients with far advanced cancer, the expression of TGF-beta had no clear-cut clinical or prognostic correlate. However, the expression of TGF-beta on tumor cells should be interpreted as a marker of tumor progression, taking into account the fibrogenic, angiogenic and immunosuppressive properties of TGF-beta. CONCLUSION: Further research is necessary to answer the question if the 3 isoforms of TGF-beta are coordinately expressed and to elucidate the involvement of this cytokine in tumor progression and metastasis.


Subject(s)
Ascitic Fluid/genetics , Cell Division/genetics , Neoplasms/genetics , Pleural Effusion, Malignant/genetics , Transforming Growth Factor beta/genetics , Tumor Cells, Cultured/pathology , Adult , Aged , Ascitic Fluid/pathology , Female , Humans , Male , Middle Aged , Neoplasms/pathology , Pleural Effusion, Malignant/pathology
9.
Acta Haematol ; 90(2): 77-83, 1993.
Article in English | MEDLINE | ID: mdl-8285022

ABSTRACT

We investigated the ultrastructural effects of recombinant tumor necrosis factor alpha (TNF) on primary leukemia cells of 8 patients (4 cases of acute myelogenous leukemia and 4 cases of chronic myelogenous leukemia) as well as on bone marrow cells of 1 normal control. The cells were kept in liquid culture for up to 92 h in the presence of up to 10,000 U/ml of recombinant human TNF without adding colony-stimulating factors. Under these conditions the concentration of viable leukemic cells decreased by 14 to 53%, compared to control cultures. In acute myelogenous leukemia, all cases to some degree developed an enlargement of mitochondria; in 2 cases prominent cytoplasmic processes, and in 2 cases cytoplasmic vacuoles were observed. In chronic myelogenous leukemia, an enlargement and deformation of all cell types was observed to varying degrees. In the normal bone marrow sample only minor cytoplasmic changes occurred. In all cultures apoptotic changes were rarely observed and--if present--were observed also in cultures without TNF. When the DNA of leukemic cells treated with TNF was separated on agarose, no fragments characteristic of apoptosis were visible. Our results demonstrate that TNF does not induce direct cytotoxicity or apoptosis in acute or chronic myeloid leukemias and are compatible with the notion that some leukemic cells may be activated or stimulated by TNF. The mitochondrion appears to be one of the primary targets of TNF. Electron microscopy is useful for monitoring the changes induced by TNF.


Subject(s)
Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology , Leukemia, Myeloid, Acute/pathology , Tumor Necrosis Factor-alpha/pharmacology , Apoptosis , Cell Division , Cell Survival , Cytoplasm/ultrastructure , DNA, Neoplasm/isolation & purification , Electrophoresis, Agar Gel , Humans , Microscopy, Electron , Mitochondria/ultrastructure , Tumor Cells, Cultured , Tumor Necrosis Factor-alpha/administration & dosage , Vacuoles/ultrastructure
10.
Ann Hematol ; 65(1): 50-2, 1992 Jul.
Article in English | MEDLINE | ID: mdl-1643161

ABSTRACT

We report here that tumor necrosis factor alpha (TNF) induces peculiar cytoplasmic vesicles in the human erythromyeloid leukemia cell line K 562, sensitized to the cytotoxic action of TNF by a treatment with the inhibitor of transcription actinomycin D. These vesicles are well delineated ultrastructurally. The formation of these vesicles is characteristic for the combination of actinomycin D with TNF and precedes the changes of apoptosis and cellular disintegration. These vesicles correspond to an intermediate step in the cytotoxicity caused by TNF and may indicate that reactive metabolites are involved in the mechanism of action of TNF.


Subject(s)
Cytoplasm/drug effects , Dactinomycin/pharmacology , Tumor Necrosis Factor-alpha/pharmacology , Cell Division/drug effects , Cytoplasm/ultrastructure , Drug Synergism , Humans , Tumor Cells, Cultured
11.
Acta Haematol ; 72(6): 368-71, 1984.
Article in English | MEDLINE | ID: mdl-6085206

ABSTRACT

Mitochondrial changes (enlargement, loss of cristae, finely granular content) were observed in 5-25% of the lymphoma cells of 6 patients suffering from different types of non-Hodgkin's lymphomas. These cytoplasmic inclusions may also be visible in light microscopic preparations and may give reason for misinterpretation.


Subject(s)
Lymphoma/ultrastructure , Mitochondria/pathology , Bone Marrow/ultrastructure , Humans , Inclusion Bodies/pathology , Leukemia/blood , Leukemia/pathology , Lymph Nodes/ultrastructure , Retrospective Studies , Staining and Labeling
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