Over 3 million neoplasms of the breast in US population will be diagnosed in 2019. This means that 2.3 new cases will be diagnosed per 100,000 women per year.\n
There is no evidence for cure for triple negative breast cancers. There would not be any long-term benefit for patients in the event of long-term survival due to an effective and durable response, as in BRCA carriers.
TNBC is a heterogeneous group of breast neoplasms, characterized by the lack of expression of estrogen receptor (ER), progesterone receptor (PR) and/or HER2/neu. The clinical relevance and heterogeneity of this tumor subtype still remains unclear, although it is thought that the high propensity to metastasize and a probable link between this tumor subtype and the poorer prognosis of patients with breast cancer were discussed.
This report illustrates the frequent use of chemotherapy, hormone therapy and surgery to treat [triple negative breast cancer](https://www.withpower.com/clinical-trials/triple-negative-breast-cancer)s. A combination of clinical expertise and the most current guidelines is needed to improve the management of this breast cancer subset.
It is suggested that the pathogenesis of triple negative breast cancer is complex, but that one mechanism is a deficiency in one or more tumor suppressor genes. It appears that the tumor suppressor BRCA1 is often deficient in combination with several other genes in triple negative breast cancer.
Pembrolizumab therapy is associated with prolonged TTP and decreased EFS regardless of HER2 overexpression or other intrinsic molecular characteristics of breast cancer cells. However, this is not true of the control group, in which chemotherapy has no effect without chemotherapy. This observation suggests that the action of a first-line checkpoint inhibitor like pembrolizumab will be a more effective adjuvant treatment for breast cancer in a subset of patients who would not benefit from chemotherapy alone but may benefit from the treatment's intrinsic and anti-tumor immune mechanism even if HER2 overexpression is present.
In our experience, the dismal prognosis associated with TNBC and the increased risk of metastasis after diagnosis must not be underestimated. Appropriateness of surgical approaches has an important impact on survival.
We can recommend clinical trials for all TNBCs based on the evidence of these publications. The presence of lymph node involvement, a high tumoral burden, and younger age seem to be negative prognostic factors. The use of TNBCs should be considered in the treatment of patients with breast Cancer.
Pembrolizumab has progressed through both large and smaller Phase III trial studies. At least six studies have demonstrated pembrolizumab's superiority to placebo, and its safety is well understood at this point. Further research efforts will clarify the optimal use and duration of pembrolizumab.
The prognosis for [breast cancer](https://www.withpower.com/clinical-trials/breast-cancer) patients with triple negative breast neoplasm is poor. One-third of them will develop metastasis, and 15% will die of the disease after the first diagnosis. Survival rate among patients with TNBC is approximately 40%.
Adding pembrolizumab to anthracycline and taxane-based chemotherapy did not improve the efficacy or improve progression-free or overall survival of breast cancer patients with HER2/neu amplification. Pembrolizumab had a well-tolerated safety profile and showed an acceptable therapeutic index.