Penile squamous cell carcinoma (pSCC) represents an uncommon malignancy characterized by stagnant mortality, psychosexual distress, and a highly variable prognosis. Currently, the World Health Organization distinguishes between human papillomavirus (HPV)-related and HPV-independent pSCC. Recently, there has been an evolving line of research documenting the enrichment of HPV-independent pSCC with a high tumor mutational burden (TMB) and programmed death ligand-1 expression, as well as clusters of genes associated with HPV status. In this study, we conducted comprehensive next-generation sequencing DNA profiling of 146 pSCC samples using a panel consisting of 355 genes associated with tumors. This profiling was correlated with immunohistochemical markers and prognostic clinical data. A survival analysis of recurrent genomic events (found in ≥10 cases) was performed. TP53, CDKN2A, ATM, EPHA7, POT1, CHEK1, GRIN2A, and EGFR alterations were associated with significantly shortened overall survival in univariate and multivariate analysis. HPV positivity, diagnosed through both p16 immunohistochemistry and HPV DNA analysis, displayed no impact on survival but was associated with high-grade, lymphatic invasion, programmed death ligand-1 negativity/weak expression, and low TMB. FAT1, TP53, CDKN2A, CASP8, and HRAS were more often mutated in HPV-independent pSCC. In contrast, HPV-associated pSCCs were enriched by EPHA7, ATM, GRIN2A, and CHEK1 mutations. PIK3CA, FAT1, FBXW7, and KMT2D mutations were associated with high TMB. NOTCH1, TP53, CDKN2A, POT1, KMT2D, ATM, CHEK1, EPHA3, and EGFR alterations were related to adverse clinicopathologic signs, such as advanced stage, high tumor budding, and lymphovascular invasion. We detected 160 alterations with potential treatment implications, with 21.2% of samples showing alterations in the homologous recombination repair pathway. To the best of our knowledge, this study describes the largest cohort of pSCC with complex molecular pathologic, clinical, and prognostic analysis correlating with prognosis.

• MeSH
• Ataxia Telangiectasia Mutated Proteins genetics   MeSH
• Adult MeSH
• ErbB Receptors genetics   MeSH
• Papillomavirus Infections MeSH
• Cyclin-Dependent Kinase Inhibitor p16 genetics   MeSH
• Middle Aged MeSH
• Humans MeSH
• Mutation MeSH
• Biomarkers, Tumor * genetics   analysis   MeSH
• Tumor Suppressor Protein p53 genetics   MeSH
• Penile Neoplasms * genetics   mortality   pathology   virology   MeSH
• Prognosis MeSH
• Telomere-Binding Proteins MeSH
• Aged, 80 and over MeSH
• Aged MeSH
• Shelterin Complex MeSH
• Carcinoma, Squamous Cell * genetics   mortality   pathology   virology   MeSH
• Check Tag
• Adult MeSH
• Middle Aged MeSH
• Humans MeSH
• Male MeSH
• Aged, 80 and over MeSH
• Aged MeSH
• Publication type
• Journal Article MeSH

Using immunohistochemistry, we examined a large cohort of 135 ovarian tumors, made up of 96 low-grade serous carcinomas (LGSCs) and 39 serous borderline tumors (micropapillary variant, mSBT), with the aim of exploring their HER2 status (overexpression). We followed with comprehensive genomic analyses on this sample set from our previous study, which revealed HER2 mutation in 5% (4/75) of LGSC and 10% (3/29) of mSBT. No cases were evaluated as HER2-positive, but 6 LGSCs and 1 mSBT were scored as HER2 1+, and 2 LGSCs and 1 mSBT showed the so-called HER2 "ultra-low" phenotype. This could be of clinical value as a potential therapeutical target concerning emerging therapeutic treatments (antibody conjugates). However, the clinical significance of this expression still needs to be established.

• MeSH
• Adult MeSH
• Immunohistochemistry MeSH
• Middle Aged MeSH
• Humans MeSH
• Mutation MeSH
• Biomarkers, Tumor genetics   metabolism   MeSH
• Ovarian Neoplasms * pathology   genetics   metabolism   MeSH
• Receptor, ErbB-2 * genetics   metabolism   MeSH
• Aged MeSH
• Cystadenocarcinoma, Serous * pathology   genetics   metabolism   MeSH
• Check Tag
• Adult MeSH
• Middle Aged MeSH
• Humans MeSH
• Aged MeSH
• Female MeSH
• Publication type
• Journal Article MeSH

BACKGROUND: Emerging evidence suggests that tumour morphological heterogeneity may influence mutational profiles relevant to therapy response. In this pilot study, we aimed to assess whether mutations identified within specific morphological patterns or at the invasion front correlate with shorter time to progression after anti-EGFR therapy, as compared to whole-tissue analysis. METHODS: We investigated genetic mutations in 142 samples from primary tumours of 39 KRAS wild-type metastatic colorectal cancer (CRC) patients receiving anti-EGFR therapy. Deep next-generation sequencing was performed on whole-tumour sections and six morphology-defined tumour regions. RESULTS: Mutations in genes linked to anti-EGFR therapy response (KRAS, BRAF, NRAS, PTEN and PI3KCA) were found uniquely in the non-responder group, with substantial variability across morphological sub-regions. BRAF mutations were aligned with serrated and mucinous morphologies, while KRAS mutations (p.Lys147Glu and p.Ala146Thr) were associated with mucinous and desmoplastic morphologies. In all cases, the cumulative mutational profile from sub-regions provided more details than that of the whole-tumour profile. CONCLUSION: Our findings highlight that comprehensive analysis, considering morphological heterogeneity, is crucial for personalised CRC treatment strategies.

• MeSH
• Drug Resistance, Neoplasm * genetics   MeSH
• Adult MeSH
• ErbB Receptors antagonists & inhibitors   MeSH
• PTEN Phosphohydrolase genetics   MeSH
• GTP Phosphohydrolases genetics   MeSH
• Protein Kinase Inhibitors * therapeutic use   MeSH
• Colorectal Neoplasms * genetics   drug therapy   pathology   MeSH
• Middle Aged MeSH
• Humans MeSH
• Mutation * MeSH
• DNA Mutational Analysis MeSH
• Pilot Projects MeSH
• Antineoplastic Agents * therapeutic use   MeSH
• Proto-Oncogene Proteins B-raf genetics   MeSH
• Proto-Oncogene Proteins p21(ras) genetics   MeSH
• Aged, 80 and over MeSH
• Aged MeSH
• High-Throughput Nucleotide Sequencing MeSH
• Check Tag
• Adult MeSH
• Middle Aged MeSH
• Humans MeSH
• Male MeSH
• Aged, 80 and over MeSH
• Aged MeSH
• Female MeSH
• Publication type
• Journal Article MeSH

Metastatický kolorektální karcinom je heterogenní onemocnění, kde je léčba individuálně volena dle znalosti molekulárních vlastností nádoru. S přibývajícími poznatky o molekulární biologii onemocnění roste současně počet potenciálních cílů pro specifickou terapii. V posledních letech je novou možností pro pacienty s metastatickým kolorektálním karcinomem s prokázanou KRAS G12C mutací terapie KRAS G12C inhibitory. Cílem článku je poskytnout přehled současných možností léčby této jednotky.

Metastatic colorectal cancer is a heterogeneous disease where treatment is individually selected according to the knowledge of the molecular characteristics of the tumour. As the knowledge of the molecular biology of the disease increases, the number of potential targets for specific therapies increases. In recent years, KRAS G12C inhibitor therapy has become a new treatment option for patients with metastatic colorectal cancer with a proven KRAS G12C mutation. The aim of this article is to provide an overview of current treatment options for this entity.

• Keywords
• KRAS G12C,
• MeSH
• ErbB Receptors antagonists & inhibitors   MeSH
• Clinical Studies as Topic MeSH
• Clinical Trials as Topic MeSH
• Colorectal Neoplasms * drug therapy   MeSH
• Drug Therapy, Combination methods   MeSH
• Humans MeSH
• Mutation MeSH
• Piperazines administration & dosage   MeSH
• Antineoplastic Agents administration & dosage   MeSH
• Pyrimidines administration & dosage   MeSH
• ras Proteins antagonists & inhibitors   genetics   MeSH
• Check Tag
• Humans MeSH
• Publication type
• Review MeSH

Východiska: HER2-pozitivní karcinom prsu tvoří přibližně 15–20 % ze všech karcinomů prsu. Jedná se o prognostický i prediktivní biomarker. Zavedení anti-HER2 terapie v posledních 20 letech výrazně zlepšilo výsledky dosahované u této podskupiny pacientek, takže jsou nyní srovnatelné, nebo dokonce lepší, než u pacientek s HER2-negativními nádory. U zhruba 5–10 % případů pacientek je karcinom prsu diagnostikován v metastazujícím stadiu. Právě pro tyto pacientky bylo dobrou zprávou, když dne 17. dubna 2020 Úřad pro kontrolu potravin a léčiv schválil tukatinib v kombinaci s trastuzumabem a kapecitabinem pro dospělé pacienty s pokročilým neresekovatelným nebo metastazujícím HER2-pozitivním karcinomem prsu, kteří již dostávali jeden nebo více předchozích režimů na bázi anti-HER2 terapie. Efektivita režimu byla prokázána ve studii HER2CLIMB, do které bylo zařazeno 612 pacientek s HER2-pozitivním metastatickým karcinomem prsu, které byly předtím léčeny trastuzumabem, pertuzumabem nebo trastuzumab emtansinem. Medián celkového přežití u pacientů v rameni s tukatinibem byl 21,9 měsíce (95% CI 18,3–31,0) ve srovnání s 17,4 měsíce (95% CI 13,6–19,9) u pacientů v kontrolním rameni (HR 0,66; 95% CI 0,50–0,87; p = 0,00480). Případ: Naše pacientka je ženou středního věku bez viscerálního metastatického postižení, ale s rozsáhlým uzlinovým postižením, metastatickým postižením skeletu a levým prsem téměř zcela spotřebovaným nádorem. Tato žena prodělala tři víceméně úspěšné linie anti-HER2 terapie a rok trvající čtvrtou linii systémové terapie cytostatikem eribulinem. Zařazením tukatinibu s trastuzumabem a kapecitabinem v páté linii systémové terapie bylo dosaženo velmi pěkné parciální regrese primárního nádoru bez významné toxicity. Závěr: V této kazuistice popisujeme případ vysoce předléčené pacientky s HER-2 pozitivním metastatickým karcinomem prsu.

Background: HER2-positive breast cancer occurs in about 15–20 % of all breast cancers. It is both a prognostic and predictive biomarker and the introduction of anti-HER2 therapy over the last 20 years has significantly improved outcomes in this subset of patients, so that they are now comparable to or better than those of patients with HER2-negative tumors. Approximately 5–10% of patients are diagnosed with metastatic breast cancer. It was good news for these patients when, on April 17, 2020, the FDA approved tucatinib in combination with trastuzumab and capecitabine for adult patients with advanced unresectable or metastatic HER2-positive breast cancer who had received one or more prior anti-HER2-based regimens in the metastatic setting. The efficacy of the regimen was demonstrated in the HER2CLIMB trial, which enrolled 612 patients with HER2-positive metastatic breast cancer who had previously been treated with trastuzumab, pertuzumab, and/or trastuzumab emtansine. Median overall survival for patients in the tucatinib arm was 21.9 months (95% CI 18.3–31.0) compared with 17.4 months (95% CI 13.6–19.9) for patients in the control arm (HR 0.66; 95% CI 0.50–0.87; P = 0.00480). Case: Our patient is a middle-aged woman without visceral metastatic involvement, but with extensive nodal involvement, skeletal metastatic involvement and left breast almost completely consumed by tumor. This woman had a more or less successful three lines of anti-HER2 therapy and the fourth line of one-year-long systemic treatment with the cytostatic eribulin. The inclusion of tucatinib with trastuzumab and capecitabine in the fifth line of systemic therapy achieved a very nice partial regression of the primary tumor without significant toxicity. Conclusion: In this case report, we describe the case of a highly pretreated patient with HER-2 positive metastatic breast cancer.

• Keywords
• Tukatinib, kapecitabin,
• MeSH
• Quinazolines therapeutic use   MeSH
• Humans MeSH
• Neoplasm Metastasis therapy   MeSH
• Breast Neoplasms * therapy   MeSH
• Oxazoles therapeutic use   MeSH
• Palliative Care * MeSH
• Antimetabolites, Antineoplastic therapeutic use   MeSH
• Pyridines therapeutic use   MeSH
• Receptor, ErbB-2 * MeSH
• Aged MeSH
• Trastuzumab therapeutic use   MeSH
• Check Tag
• Humans MeSH
• Aged MeSH
• Female MeSH

of the original article, 'Efficacy of Trastuzumab Deruxtecan in HER2-Expressing Solid Tumors by Enrollment HER2 IHC Status: Post Hoc Analysis of DESTINY-PanTumor02'. Trastuzumab deruxtecan (T-DXd) is an antibody-drug conjugate, which is a chemotherapy with a linker (deruxtecan) joined to an antibody (trastuzumab). Trastuzumab binds to the human epidermal growth factor receptor 2 (HER2) protein on cancer cells, where it releases the chemotherapy to kill these cells. The DESTINY-PanTumor02 clinical study tested the effectiveness of T-DXd for people with various HER2-expressing cancers and the safety of treatment. Previous results from DESTINY-PanTumor02 showed that T-DXd had antitumor activity, and the greatest effects were seen in people with the highest tumor level of HER2 [defined as immunohistochemistry (IHC) 3+]. In this previous analysis, the HER2 expression was measured at a central laboratory. In clinical practice, HER2 expression will likely be measured at a local laboratory, so understanding whether T-DXd has similar effects regardless of how HER2 expression is measured is important. Here, we looked at the effects of T-DXd based on the HER2 test result used to determine a person's eligibility for the study, which could be measured using a local or central laboratory. In people with IHC 3+ tumors (where HER2 was measured at a local or central laboratory), 51% had a decrease in the size or number of tumors, according to established criteria (referred to as an objective response), while, in people with IHC 2+ tumors, 26% had an objective response. Side effects with T-DXd were consistent with previous studies. These results confirm T-DXd has antitumor effects in HER2-expressing cancers where the HER2 expression is measured by a local or central laboratory.

• MeSH
• Immunohistochemistry MeSH
• Immunoconjugates * therapeutic use   adverse effects   MeSH
• Camptothecin * analogs & derivatives   therapeutic use   administration & dosage   adverse effects   MeSH
• Clinical Trials, Phase II as Topic MeSH
• Humans MeSH
• Neoplasms * drug therapy   metabolism   pathology   MeSH
• Antineoplastic Agents, Immunological * therapeutic use   MeSH
• Receptor, ErbB-2 * metabolism   MeSH
• Secondary Data Analysis MeSH
• Trastuzumab * therapeutic use   adverse effects   MeSH
• Treatment Outcome MeSH
• Check Tag
• Humans MeSH
• Female MeSH
• Publication type
• Journal Article MeSH

The immunohistochemical (IHC) or fluorescence/chromogenic in situ hybridization (FISH/CISH) assays for assessing HER2 are now recommended by the American Society of Clinical Oncologists and the College of American Pathologists, but there are an increasing number of published studies describing alternative diagnoses at the molecular level. Inspired by these studies, we established a laboratory-developed test (LDT) to analyze HER2 status not only at the gene expression level but also at the gene copy number. A precise copy number calculation was fulfilled including the Control Genomic DNA of known concentration, which allowed subsequent assay validation at the DNA level. The results were reported according to the concordant results of the DNA and RNA approaches. By comparing with IHC determination, completely identical results were found in ten blank samples, which underlines the legitimacy of molecular biological approaches in this diagnostic field. An equivocal sample that was positive by IHC and qPCR was found to be negative by the FISH and so it may change the choice of personalized medicine. The topic of this short communication will hopefully contribute to allowing IVD-certified diagnostics based on the HER2 gene expression profile or copy number to be tested in the Czech Republic as well.

• MeSH
• DNA genetics   metabolism   MeSH
• Gene Dosage * MeSH
• In Situ Hybridization, Fluorescence * methods   MeSH
• Immunohistochemistry * methods   MeSH
• Humans MeSH
• Biomarkers, Tumor genetics   metabolism   MeSH
• Breast Neoplasms genetics   metabolism   diagnosis   MeSH
• Receptor, ErbB-2 * genetics   metabolism   MeSH
• RNA metabolism   genetics   analysis   MeSH
• Check Tag
• Humans MeSH
• Female MeSH
• Publication type
• Journal Article MeSH

PURPOSE: We report CNS efficacy of first-line osimertinib plus chemotherapy versus osimertinib monotherapy in patients with epidermal growth factor receptor (EGFR)-mutated advanced non-small-cell lung cancer (NSCLC) from the phase III FLAURA2 study according to baseline CNS metastasis status. METHODS: Patients were randomly assigned to osimertinib plus platinum-pemetrexed (combination) or osimertinib monotherapy until disease progression or discontinuation. Brain scans were performed in all patients at baseline and progression and at scheduled assessments until progression for patients with baseline CNS metastases; scans were assessed by neuroradiologist CNS blinded independent central review (BICR). RESULTS: On the basis of baseline CNS BICR, 118 of 279 (combination) and 104 of 278 (monotherapy) randomly assigned patients had ≥one measurable and/or nonmeasurable CNS lesion and were included in the CNS full analysis set (cFAS); 40 of 118 and 38 of 104 had ≥one measurable target CNS lesion and were included in the post hoc CNS evaluable-for-response set (cEFR). In the cFAS, the hazard ratio (HR) for CNS progression or death was 0.58 (95% CI, 0.33 to 1.01). In patients without baseline CNS metastases, the HR for CNS progression or death was 0.67 (95% CI, 0.43 to 1.04). In the cFAS, CNS objective response rates (ORRs; 95% CI) were 73% (combination; 64 to 81) versus 69% (monotherapy; 59 to 78); 59% versus 43% had CNS complete response (CR). In the cEFR, CNS ORRs (95% CI) were 88% (73 to 96) versus 87% (72 to 96); 48% versus 16% had CNS CR. CONCLUSION: Osimertinib plus platinum-pemetrexed demonstrated improved CNS efficacy compared with osimertinib monotherapy, including delaying CNS progression, irrespective of baseline CNS metastasis status. These data support this combination as a new first-line treatment for patients with EGFR-mutated advanced NSCLC, including those with CNS metastases.

• MeSH
• Acrylamides * MeSH
• Aniline Compounds therapeutic use   MeSH
• ErbB Receptors genetics   MeSH
• Indoles * MeSH
• Protein Kinase Inhibitors therapeutic use   MeSH
• Humans MeSH
• Mutation MeSH
• Central Nervous System Neoplasms * diagnostic imaging   drug therapy   genetics   MeSH
• Lung Neoplasms * drug therapy   genetics   pathology   MeSH
• Carcinoma, Non-Small-Cell Lung * drug therapy   genetics   pathology   MeSH
• Pemetrexed therapeutic use   MeSH
• Platinum therapeutic use   MeSH
• Pyrimidines * MeSH
• Check Tag
• Humans MeSH
• Publication type
• Journal Article MeSH
• Clinical Trial, Phase III MeSH
• Randomized Controlled Trial MeSH

• Keywords
• studie MONALEESA, ribociclib,
• MeSH
• Aminopyridines pharmacology   therapeutic use   MeSH
• Humans MeSH
• Neoplasm Metastasis MeSH
• Breast Neoplasms * drug therapy   MeSH
• Antineoplastic Protocols MeSH
• Purines pharmacology   therapeutic use   MeSH
• Randomized Controlled Trials as Topic MeSH
• Receptor, ErbB-2 MeSH
• Check Tag
• Humans MeSH
• Female MeSH

PURPOSE: Trastuzumab deruxtecan (T-DXd) is a human epidermal growth factor 2 (HER2)-directed antibody-drug conjugate approved in HER2-expressing breast and gastric cancers and HER2-mutant non-small-cell lung cancer. Treatments are limited for other HER2-expressing solid tumors. METHODS: This open-label phase II study evaluated T-DXd (5.4 mg/kg once every 3 weeks) for HER2-expressing (immunohistochemistry [IHC] 3+/2+ by local or central testing) locally advanced or metastatic disease after ≥1 systemic treatment or without alternative treatments. The primary end point was investigator-assessed confirmed objective response rate (ORR). Secondary end points included safety, duration of response, progression-free survival (PFS), and overall survival (OS). RESULTS: At primary analysis, 267 patients received treatment across seven tumor cohorts: endometrial, cervical, ovarian, bladder, biliary tract, pancreatic, and other. The median follow-up was 12.75 months. In all patients, the ORR was 37.1% (n = 99; [95% CI, 31.3 to 43.2]), with responses in all cohorts; the median DOR was 11.3 months (95% CI, 9.6 to 17.8); the median PFS was 6.9 months (95% CI, 5.6 to 8.0); and the median OS was 13.4 months (95% CI, 11.9 to 15.5). In patients with central HER2 IHC 3+ expression (n = 75), the ORR was 61.3% (95% CI, 49.4 to 72.4), the median DOR was 22.1 months (95% CI, 9.6 to not reached), the median PFS was 11.9 months (95% CI, 8.2 to 13.0), and the median OS was 21.1 months (95% CI, 15.3 to 29.6). Grade ≥3 drug-related adverse events were observed in 40.8% of patients; 10.5% experienced adjudicated drug-related interstitial lung disease (ILD), with three deaths. CONCLUSION: Our study demonstrates durable clinical benefit, meaningful survival outcomes, and safety consistent with the known profile (including ILD) in pretreated patients with HER2-expressing tumors receiving T-DXd. Greatest benefit was observed for the IHC 3+ population. These data support the potential role of T-DXd as a tumor-agnostic therapy for patients with HER2-expressing solid tumors.

• MeSH
• Antibodies, Monoclonal, Humanized adverse effects   MeSH
• Immunoconjugates * adverse effects   MeSH
• Lung Diseases, Interstitial * chemically induced   drug therapy   MeSH
• Humans MeSH
• Lung Neoplasms * drug therapy   MeSH
• Breast Neoplasms * drug therapy   MeSH
• Carcinoma, Non-Small-Cell Lung * drug therapy   MeSH
• Receptor, ErbB-2 metabolism   MeSH
• Trastuzumab adverse effects   MeSH
• Check Tag
• Humans MeSH
• Female MeSH
• Publication type
• Journal Article MeSH
• Clinical Trial, Phase II MeSH