Impact of oral submucous fibrosis on chemotherapy-induced mucositis for head and neck cancer in a geographic area in which betel quid chewing is prevalent

Outcome and treatment toxicity in east-indian versus white-canadian patients with oral cavity cancer following postoperative (chemo-)radiotherapy delivered under similar multidisciplinary care: A propensity-matched cohort study

PURPOSE

We compare clinical behaviour of East-Indians and White-Canadians with oral cavity squamous cell carcinoma (OSCC) treated at a Western institution within a uniform health care system.

MATERIALS/METHODS

Newly diagnosed OSCC patients who underwent postoperative (chemo-)radiotherapy (PORT/POCRT) between 2005 and 2017 were included. Data on ethnicity and other variables were extracted from patient-questionnaires, a prospective database and supplemented by chart review. Baseline characteristics were compared between East-Indian versus White-Canadian groups. A propensity-matched (1:1 ratio) of East-Indian versus White-Canadian cohorts was generated to compare locoregional control (LRC), distant control (DC), overall survival (OS), and acute and late toxicities.

RESULTS

A total of 53 East-Indian and 467 White-Canadian OSCC patients were identified. Compared to White-Canadians, East-Indian patients were younger, had less exposure to smoking and alcohol (p < 0.001), but more chewed betel (areca) nut /tobacco (43% vs 0.2%, p < 0.001). Buccal/retromolar-trigone/lower gingiva primaries were more common in East-Indians (49% vs 25%, p < 0.001). Median follow-up was 5.0 years. Propensity-score paired analysis revealed inferior 3-year LRC (68% vs 81%, p = 0.030), non-significantly lower OS (61% vs 75%, p = 0.257), but similar DC (81% vs 87%, p = 0.428) in East-Indian versus White-Canadian patients. Actuarial rate of toxicities was higher in East-Indians vs White-Canadians: acute toxicity at 6 weeks: 47% vs 30%, p = 0.012; chronic trismus at 5-years: 16% vs 2%, p = 0.013.

CONCLUSION

East-Indian OSCC patients have a greater betel nut/ chewable tobacco exposure compared to White-Canadians and a different distribution of OSCC sites. Propensity-matched cohort analysis showed lower LRC and higher toxicities in East-Indian OSCC patients, suggesting a complicated interaction between genetic/biological and life-style factors.

A phase II randomized trial comparing neoadjuvant chemotherapy followed by concurrent chemoradiotherapy versus concurrent chemoradiotherapy alone in advanced squamous cell carcinoma of the pharynx or larynx

BACKGROUND

To clarify the effect of induction chemotherapy (ICT) in patients with advanced pharyngeal and laryngeal squamous cell carcinoma (PLSCC) treated with concurrent chemoradiotherapy (CCRT).

METHODS

Patients with treatment-naïve nonmetastatic advanced PLSCC were stratified according to disease stage (III or IV) and resectability before being randomized to either a ICT/CCRT or CCRT arm. A cisplatin/tegafur-uracil/leucovorin regimen was administered during ICT and CCRT. The primary end point was overall survival (OS).

RESULTS

We enrolled 151 patients during December 2006 to February 2011. The median follow-up of surviving patients was 54.5 months. The ICT/CCRT arm included more patients with hypopharynx cancer (57.1% vs 40.5%, p = 0.09) and N2 or N3 diseases (85.7% vs 74.4%, p = 0.02). In the ICT/CCRT and CCRT arms, the 5-year OS was 48.1% and 53.2% (p = 0.45); progression-free survival (PFS) was 31.8% and 55.6% (p = 0.015); and locoregional control (LRC) was 37.7% and 56.2% (p = 0.026), respectively. The adverse events and compliance to radiotherapy were similar. However, the proportion of patients receiving a total dose of cisplatin during CCRT <150 mg/m² was higher in the ICT/CCRT arm (46.8% vs 16.2%; p = 0.000) and independently predicted poorer PFS and LRC in multivariate analysis.

CONCLUSION

OS did not vary between the ICT/CCRT and CCRT arms. However, poorer compliance to CCRT and inferior LRC and PFS were observed in the ICT/CCRT arm. Optimizing the therapeutic ratio in both ICT and CCRT settings are necessary for developing a sequential strategy for patients with advanced-stage PLSCC.

Panmucositis and chemosensitisation associated with betel quid chewing during dose-dense adjuvant breast cancer chemotherapy

PURPOSE

The severity of chemotherapy-induced oral mucositis has previously been reported to be greater in patients who chew betel quid (areca), an addictive habit shared by hundreds of millions of individuals worldwide. Here, we report a case of fulminant panmucositis complicating dose-dense adjuvant breast cancer treatment in a betel-chewing patient without evidence of other risk factors.

METHODS

Grade IV mucositis was triggered by the initial use of standard-dose anthracycline chemotherapy, and involved not only the mouth but also the genital and anal mucosa, as well as other severe non-mucosal toxicities.

RESULTS

Despite subsequent treatment with dose-reduced CMF and docetaxel regimens-which are seldom associated with mucosal toxicity at these dose intensities in the absence of neutropenia-high-grade oral mucositis continued to complicate the therapeutic course.

CONCLUSION

These observations suggest that the potentiation of chemotherapy-induced mucositis by quid chewing may not be mediated solely by local effects on the oral epithelium, but also involves the systemic absorption of toxic chemosensitising molecules.

Phase II trial of cisplatin, tegafur plus uracil and leucovorin as neoadjuvant chemotherapy in patients with squamous cell carcinoma of the oropharynx and hypopharynx

We evaluated the efficacy and toxicity of cisplatin, tegafur plus uracil and leucovorin as neoadjuvant chemotherapy for locally advanced squamous cell carcinoma (SCC) of the oropharynx and hypopharynx. Forty-six patients (stage IV, 83%; N2/3, 52%) were treated with PUL (50 mg/m2 cisplatin on day 1, 300 mg/m2 tegafur plus uracil orally and 60 mg leucovorin orally on days 1-14) over a 14-day cycle. Evaluation after 3 cycles led to chemotherapy termination if primary tumor responses were less than partial responses. Otherwise, PUL was continued up to 6 cycles before locoregional therapy. Patients achieving at least good partial responses at the primary site after neoadjuvant chemotherapy received radiotherapy for organ preservation. Chemotherapy responses were analyzed by intent-to-treat. Response rates of primary sites were 71.7% (33 of 46) with 34.8% (16 of 46) showing a complete response. Thirty patients (65.2%) achieved good partial responses at the primary site. Overall response and complete response rates of neck lymph nodes were 68.6% (24 of 35) and 25.7% (nine of 35). The combined response rate of primary site and neck lymph nodes was 63% (95% confidence interval 48.5-77.5%) with a complete response rate of 15.2%. Toxicities of WHO grade 3-4 included anemia (19.6%), diarrhea (17.4%) and neutropenia (8.7%). With a median follow-up of 36 months, overall survival and disease-free survival rates were 45.7% (21 of 46) and 41.3% (19 of 46); organ preservation rate was 90% (19 of 21). We concluded that the outpatient PUL regimen was a moderately effective, less-toxic neoadjuvant chemotherapy for SCC of the oropharynx and hypopharynx. PUL should be studied further with other active agents or radiotherapy.

Cisplatin, tegafur, and leucovorin: a moderately effective and minimally toxic outpatient neoadjuvant chemotherapy for locally advanced squamous cell carcinoma of the head and neck

BACKGROUND

To evaluate the efficacy and toxicity of cisplatin, tegafur, and leucovorin as neoadjuvant chemotherapy (CT) for patients with advanced, nonmetastatic squamous cell carcinoma of the head and neck (SCCHN).

METHODS

Patients with SCCHN according to World Health Organization (WHO) performance status of 2 or less and adequate organ function were enrolled. The CT regimen (PTL) was 50 mg/m(2) cisplatin (P) on Day 1, 800 mg per day oral tegafur (T), and 60 mg per day oral leucovorin (L) for 14 days. The CT was administered at outpatient clinics for 14-day cycles. PTL was initiated with the intent of organ preservation and it was continued for a maximum of six cycles before locoregional therapy. Reevaluation after three cycles led to the termination of CT when the response was less than a partial response. CT was discontinued immediately upon evidence of tumor progression or excessive toxicity.

RESULTS

From March 1996 through July 1999, 97 patients were enrolled consecutively. All participants were men with a median age of 56 years (range, 37-70 years). The primary tumor sites were the tongue base, 14, and the hypopharynx, 83. Sixteen percent of the tumors were Stage III, 84% were Stage IV, 62% were Stage T4, and 44% were Stage N2-3. The median number of CT cycles was six. On an intent-to-treat basis, 26 patients (27%) achieved complete responses and 32 patients (33%) achieved partial responses. The overall response rate was 60% (95% confidence interval, 50-70%). The most common toxicities of WHO Grade 3 or higher included (percent of patients): anemia, 8.3%; stomatitis, 6.3%; thrombocytopenia, 3.1%; and vomiting, 3.1%. With a median follow-up period of 3 years, the overall survival and disease-free survival rates were 40% and 38%, respectively. Organ preservation was achieved in 70% (29 of 37) of the surviving patients.

CONCLUSION

The outpatient PTL regimen was a moderately effective and minimally toxic CT for SCCHN. PTL should be studied further in combination with other active agents or radiotherapy for patients with SCCHN.

Intra-arterial plus i.v. chemotherapy for advanced bulky squamous cell carcinoma of the buccal mucosa

From July 1994 to December 1996, 41 patients with previously untreated, advanced bulky squamous cell carcinoma arising from the buccal mucosa (BSCC) were enrolled. All patients were males with a median age of 47 years (range 29-72). The tumor extent was stage III/IV: three of 38, T4: 85%, N2-3: 20%. Patients were initially scheduled to receive intra-arterial (i.a.) chemotherapy, followed by i.v. chemotherapy and regional therapy. The i.a. chemotherapy catheter was properly placed by external carotid artery angiography via the femoral artery. The i.a. chemotherapy consisted of cisplatin (P) 100 mg/m(2) day 1 plus 5-fluorouracil (F) 1000 mg/m(2) day 1-4, and the i.v. chemotherapy consisted of PF (10 patients) or PF plus methotrexate 200 mg/m(2) day 15 and 22 (31 patients). All chemotherapy regimens were administered at 4-week intervals. The response rate of i.a. plus i.v. chemotherapy for the primary site was 85% (35 of 41) with 29% complete remission (CR) (12 of 41). The response and CR rates of neck nodes were 82% (14 of 17) and 41% (seven of 17), respectively. The combined overall response rate was 80% (33 of 41) with a 29% CR (12 of 41). Major toxicity from i.a. chemotherapy of WHO grade > or = 3 included: mucositis of infusion area (76%), hemialopecia (56%) and leukopenia (5%). Three neurologic complications of i.a. chemotherapy including one hemiparesis occurred. The median follow-up time was 47 months (range 36-66 months), and the overall survival and disease-free survival were both 34% (14 of 41). Four patients were cured with chemotherapy alone and eight patients (19.5%) were cured without surgical intervention. Using i.a. chemotherapy as a cytoreductive therapy followed by subsequent i.v. chemotherapy produces a high response rate and an encouraging degree of complete response rate in advanced bulky BSCC. However, toxicity management and catheter placement will need to be improved in order to better define the role of this therapy in advanced BSCC.