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头颈鳞状细胞癌 (HNSCC) - Tumor DeckHead and Neck Squamous Cell Carcinoma (HNSCC) - Tumour Deck |
头颈癌 (H&N) 的主要目标是起源于口腔的肿瘤,包括唇黏膜、咽、喉和鼻窦。 这些肿瘤95%以上是鳞状细胞癌。 口腔癌、下嚥癌、喉癌和非人类乳突病毒 (HPV) 相关口咽癌最常见的原因是吸烟和饮酒障碍。 头颈癌患者,尤其是烟草和酒精诱发的头颈癌患者,在头颈、肺部、食道、膀胱和其他接触这些致癌物质的部位同步发生原发性肿瘤,存在发生头颈癌的风险。第二原发肿瘤。
在先前的治疗(通常包括放射治疗和化疗)后疾病进展后,转移性头颈癌的治疗尤其具有挑战性。 过去四年,免疫疗法的批准和两种 PD-1 抑制剂用于治疗復发转移的批准令人兴奋。 临床试验目前正在进行中,并正在走向最终治疗。
头颈鳞状细胞癌不仅由癌细胞组成,而且是一个动态的生态系统,肿瘤细胞与微环境的各个组成部分相互作用。 这个生态系统包括免疫细胞、癌症相关成纤维细胞 (CAF)、癌症干细胞 (CSC)、脉管系统和病毒因子,例如人类乳突病毒 (HPV)。 了解这些成分之间的相互作用和串扰对于制定有效的治疗策略至关重要。
晚期肿瘤发生率相对较高,可能与HNSCC肿瘤早期患者症状有限或从早期向晚期进展较快有关。 高达 40% 的 cN0 颈部有隐性转移性疾病。 因此,开发用于早期检测转移的肿瘤生物标记至关重要。 肿瘤标记在二级预防中发挥重要作用。 可以使用生化和免疫学表达作为肿瘤标记来量化肿瘤分化。 目前,经过严格的体外测试,FDA 已批准 28 种生物标记用于临床。 然而,目前还没有 FDA 批准的 HNSCC 诊断或预后的蛋白质或突变标记物。
接受多种药物治疗的局部晚期 HNSCC 患者中,超过 50% 会在完成治癒性治疗后 3 年内復发或转移。 目前,由于没有有效的早期发现筛检方法,大量病例确诊时已属晚期。
本报告调查了全球头颈鳞状细胞癌 (HNSCC) 市场,并提供了市场现状、病例数趋势、患者趋势、竞争产品的市场定位以及市场机会。我是。
Head and Neck (H&N) cancers primarily targets tumors originating from the oral cavity, including the mucosal lip, pharynx, larynx, and paranasal sinuses. More than 95% of these tumors are squamous cell carcinomas. The most common causes for oral cavity, hypopharynx, larynx, and Human Papillomavirus (HPV)-unrelated oropharynx cancers are tobacco and alcohol use disorders. Patients with H&N cancers, particularly those caused by tobacco and alcohol, risk synchronous primary tumors and developing second primary neoplasms in the H&N, lung, esophagus, bladder, and other sites exposed to these carcinogens.
"Metastatic head and neck cancer is a challenging disease to treat particularly after disease progression on prior therapy, which usually includes radiation and chemotherapy. Over the last 4 years, we've seen the big excitement with immunotherapy being approved, with 2 PD-1 inhibitors approved in the recurrent metastatic setting. We're seeing this moving now to the definitive therapy setting with trials that are accruing."
Head and neck squamous cell carcinoma is not solely composed of cancer cells but is rather a dynamic ecosystem where tumor cells interact with various components in their microenvironment. This ecosystem includes immune cells, cancer-associated fibroblasts (CAFs), cancer stem cells (CSCs), vasculature, and viral factors such as human papillomavirus (HPV). Understanding the interactions and crosstalk between these components is essential for developing effective treatment strategies.
The relative higher incidence of advanced stage tumours could be related to limited symptomatology in patients with early stage or swift progression from early to advanced stage in HNSCC tumours. Up to 40% of cN0 necks harbor occult metastatic disease. Hence, developing tumour biomarkers to detect metastasis at early stage is essential. Tumour markers play a significant role in secondary prevention. Tumour differentiation can be quantified using biochemical and immunological representation as tumour markers. Currently, the FDA has approved 28 biomarkers after robust in vitro tests for clinical use. However, there is no protein or mutation marker approved for diagnosis or prognosis in HNSCC by the FDA
Source: Bai et al, 2020.
For LA HNSCC, the primary treatment modality is often a combination of surgery and RT. In some cases, multimodal approach is considered in which chemotherapy may also be administered concurrently with RT to enhance its effectiveness.
For R/M HNSCC, the treatment options are more limited. Systemic therapy, which includes chemotherapy and targeted therapy, is the mainstay of treatment. Chemotherapy drugs such as cisplatin, carboplatin, and 5-fluorouracil are commonly used. Targeted therapies, such as cetuximab (an anti-EGFR monoclonal antibody), may also be used in combination with chemotherapy.
Immunotherapy has emerged as a promising treatment option for R/M HNSCC. Immune checkpoint inhibitors, such as pembrolizumab and nivolumab, have shown significant efficacy in improving overall survival in patients with R/M HNSCC.
"Management of early-stage locoregional HNSCC primarily rests on a combination of chemotherapy and radiation therapy. However, the therapeutic trajectory becomes intricate for patients experiencing local or regional recurrence due to radiation field overlaps. Additionally, the management of recurrent or second primary HNSCC has become more complex due to the increased incidence of HPV-associated HNSCC compared to non-HPV HNSCC. This change in disease profile has led to a wider range of treatment options available to practicing oncologists, further complicating the decision-making process."
"Use of immunotherapy in the treatment of [HNSCC] is still evolving, with a continued unmet need for first-line regimens that provide durable clinical benefit with tolerable safety, further research is needed to determine the utility of dual immunotherapy as a treatment option for [HNSCC] and identify novel biomarkers to predict benefit with immunotherapy."