| Title |
Prognostic factors in the myoepithelial-like spindle cell type of metaplastic breast cancer
|
|---|---|
| Published in |
Virchows Archiv, May 2016
|
| DOI | 10.1007/s00428-016-1950-9 |
| Pubmed ID | |
| Authors |
Fabian Leo, Stephan Bartels, Lavinia Mägel, Theodor Framke, Guntram Büsche, Danny Jonigk, Matthias Christgen, Ulrich Lehmann, Hans Kreipe |
| Abstract |
Metaplastic breast carcinoma (MBC) comprises a heterogeneous group of tumors with difficult to predict biological behavior. A subset of MBC, characterized by spindle-shaped tumor cells with a myoepithelial-like immunophenotype, was entered into a retrospective study (n = 42, median follow-up time 43 months). Molecular parameters (DNA sequences of mutation hot spots in AKT1, ALK, APC, BRAF, CDH1, CTNNB1, EGFR, ERBB2, FBXW7, FGFR2, FOXL2, GNAQ, GNAS, KIT, KRAS, MAP2K1, MET, MSH6, NRAS, PDGFRA, PIK3CA, PTEN, SF3B1, SMAD4, SRC, SRSF2, STK11, TP53, and U2AF1; copy numbers for EGFR, c-myc, FGFR, PLAG, c-met) were assessed. None of the patients had axillary lymph node involvement. In 13 cases, local recurrence developed after surgery (30.9 %). Distant metastasis occurred in seven patients (17 %; four after local recurrence). The most frequent genetic alteration was PIK3CA mutation (50 % of cases). None of the pathological parameters (size, grade, stage, Ki-67 labeling index) was significantly associated with disease-free survival (DFS) or overall survival (OS). PIK3CA mutation, especially the H1047R type, tended to adversely affect OS. Type of resection (mastectomy vs. breast-conserving therapy, width of margins) or adjuvant radiotherapy had no influence on DFS or OS, whereas in the group treated with radio-/chemotherapy, no local recurrence or metastasis and no death occurred. We conclude that the spindle cell type of MBC with myoepithelial features exhibits a higher frequency of PIK3CA mutation than other types of metaplastic or basal-like breast cancer and may benefit from combined radio-/chemotherapy. Classical pathological parameters are not helpful in identifying the high-risk tumors among this subgroup of MBC. |
X Demographics
The data shown below were collected from the profiles of 2 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Brazil | 1 | 50% |
| Unknown | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Practitioners (doctors, other healthcare professionals) | 1 | 50% |
| Scientists | 1 | 50% |
Mendeley readers
The data shown below were compiled from readership statistics for 46 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 46 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 9 | 20% |
| Student > Bachelor | 6 | 13% |
| Other | 5 | 11% |
| Researcher | 5 | 11% |
| Student > Ph. D. Student | 5 | 11% |
| Other | 6 | 13% |
| Unknown | 10 | 22% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 15 | 33% |
| Biochemistry, Genetics and Molecular Biology | 5 | 11% |
| Pharmacology, Toxicology and Pharmaceutical Science | 4 | 9% |
| Nursing and Health Professions | 3 | 7% |
| Agricultural and Biological Sciences | 2 | 4% |
| Other | 4 | 9% |
| Unknown | 13 | 28% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 28 May 2016.
All research outputs
#14,853,520
of 22,875,477 outputs
Outputs from Virchows Archiv
#1,187
of 1,951 outputs
Outputs of similar age
#199,300
of 335,850 outputs
Outputs of similar age from Virchows Archiv
#9
of 23 outputs
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