RESUMO
BACKGROUND: Cyclin-dependent kinase 4/6 inhibitors (CDK4/6i) have been recently developed and introduced into clinical practice. METHODS: We retrospectively analyzed data from patients with confirmed HR+/HER2 metastatic breast cancer treated with hormonal therapy in combination with ribociclib (R), palbociclib (P), or abemaciclib (A). OUTCOMES: median progression-free survival (mPFS), time to treatment discontinuation (mTTD), and objective response rate (ORR). RESULTS: Between January 2016 - June 2021, 142 patients were treated with an CDK4/6i (79 P, 42 R, 21 A). The median age was 59 years and 67.6% had recurrent disease. Roughly 35.2%, 36.6%, 28.2% of the patients had 1, 2 or 3+ metastatic sites, respectively, and 55.6% of the patients received CDK4/6i as a first-line treatment. The mPFS was 28m(R) vs. 14m(P) vs. 6m(A) (P = 0.002), with a higher proportion of patients receiving R in the first-line setting. However, no difference was seen when the analysis was restricted to the first-line scenario (P = 0.193). Sixty-four patients required one dose reduction, and 19 patients required two. ORR was 76.2% (R) vs 62% (P) vs 42.9% (A). More patients achieved a complete response with R and P, with no difference in the incidence of partial response and stable disease. Adverse events occurred in 94.4% of the population, with the most common grade 3-4 AE being neutropenia (59.1%). CONCLUSIONS: Our results confirm the efficacy and tolerability of CDK4/6i in routine clinical practice. This is the first real-world data describing and comparing the efficacy and toxicity of CDK4/6i in the Brazilian population.
Assuntos
Neoplasias da Mama , Feminino , Humanos , Pessoa de Meia-Idade , Brasil , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Quinase 4 Dependente de Ciclina/antagonistas & inibidores , Intervalo Livre de Progressão , Estudos RetrospectivosRESUMO
Chromosomal rearrangements involving the c-ros oncogene 1 (ROS1) gene define a subset of non-small cell lung cancers highly sensitive to small-molecule tyrosine kinase inhibitors. However, little is known about the impact of different fusion partners on tyrosine kinase inhibitor efficacy. We herein describe a case of a 26-year-old never-smoker patient from southern Africa with metastatic lung adenocarcinoma driven by SLC12A2-ROS1 fusion, who had a pronounced and durable response to crizotinib. The present case underscores the importance of pursuing actionable alterations in patients with similar clinical and epidemiological characteristics. In addition, provides the second report of crizotinib activity against lung malignancies harboring the unique SLC12A2-ROS1 fusion and highlights the importance of a deeper understanding of molecular alterations in underrepresented subgroups of patients to tailor the decision-making in daily practice.
RESUMO
The survival outcomes of the FLAURA trial support osimertinib as the new standard of care for untreated patients harboring activating mutations in the epidermal growth factor receptor (EGFR). Despite the initial response, disease progression invariably occurs. Although uncommon, BRAF V600E mutation arises as a unique mechanism of resistance, and thus far, no prospective studies are available to support concurrent EGFR/BRAF blockade. We report a case of impressive radiological and ctDNA response under dabrafenib, trametinib, and osimertinib in an advanced EGFR-mutant lung adenocarcinoma patient who developed BRAF V600E as one of the acquired resistance mechanisms to second-line osimertinib. Moreover, the patient experienced remarkable clinical improvement and good tolerance to combination therapy. The present case suggests the importance of prospective studies evaluating both efficacy and safety of the combination in later line settings and points towards the potential of ctDNA to monitor resistance mechanisms and treatment benefit in clinical practice.
RESUMO
A distrofia muscular de Duchenne (DMD) é uma doenþa recessiva ligada ao cromossomo X (na regiÒo p21) que ocorre por uma mutaþÒo no gene responsável pela síntese da proteína distrofina que resulta em uma quantidade muito reduzida, nula ou em uma forma anormal dessa proteína. Até que a terapia molecular possa ser obtida somente os corticóides aumentaram temporariamente a funþÔo muscular. SÒo utilizados os seguintes corticóides: prednisona e prednisolona (0.75 mg/kg) e deflazacort (0.9 mg/kg). Os corticóides aumentam massa muscular, retardam a velocidade de degeneraþÒo muscular, aumentam o tempo de deambulaþÒo e também a capacidade respiratória e cardíaca. No entanto esteróides posseum diversos efeitos colaterais. O deflazacort causa menos efeitos colaterais, exceto a catarata. Os efeitos benéficos e colaterais dos corticóides precisam ser monitorizados de perto.(AU)
Assuntos
Humanos , Masculino , Feminino , Distrofia Muscular de Duchenne/diagnóstico , Distrofia Muscular de Duchenne/terapia , Corticosteroides/administração & dosagem , Corticosteroides/efeitos adversos , Corticosteroides , Corticosteroides/uso terapêutico , Resultado do TratamentoRESUMO
A distrofia muscular de Duchenne (DMD) é uma doença recessiva ligada ao cromossomo X (na região p21) que ocorre por uma mutação no gene responsável pela síntese da proteína distrofina que resulta em uma quantidade muito reduzida, nula ou em uma forma anormal dessa proteína. Até que a terapia molecular possa ser obtida somente os corticóides aumentaram temporariamente a funçâo muscular. São utilizados os seguintes corticóides: prednisona e prednisolona (0.75 mg/kg) e deflazacort (0.9 mg/kg). Os corticóides aumentam massa muscular, retardam a velocidade de degeneração muscular, aumentam o tempo de deambulação e também a capacidade respiratória e cardíaca. No entanto esteróides posseum diversos efeitos colaterais. O deflazacort causa menos efeitos colaterais, exceto a catarata. Os efeitos benéficos e colaterais dos corticóides precisam ser monitorizados de perto.