Dataset Information

Validation of Hearing Loss Prediction Tool for Cisplatin Chemotherapy and Radiation in Head and Neck Cancer Treatment.

ABSTRACT:

Importance

Hearing loss affects up to 88% of patients undergoing head and neck cancer treatment; however, there are few validated models to predict this outcome. A predictive posttreatment model for hearing loss will allow clinicians and patients to make well-informed decisions about treatment with cisplatin-based chemotherapies and radiotherapy.

Objective

To validate a previously created predictive model for objective hearing outcomes and to assess barriers to using the prediction nomogram in general practice for patients newly diagnosed with head and neck cancer.

Design, setting, and participants

This cohort study includes an evaluation of 105 patients (208 ears) and interviews with 6 clinicians. The patients were treated at a high-volume tertiary care hospital. Patient participants were newly diagnosed with head and neck cancer and treated at Siteman Cancer Center from July 1, 2018, to December 31, 2019, with radiotherapy both with and without cisplatin-based chemotherapy. Additionally, the clinicians involved in the care of patients with head and neck cancer were interviewed to assess implementation strategies.

Exposures

Radiotherapy with and without cisplatin-based chemotherapy.

Main outcomes and measures

Hearing defined by the audiometric pure-tone average of 1, 2, and 4 kHz.

Results

A total of 105 patients (208 ears; mean [SD] age, 61 [11] years; 82 men [78%]) were compared with the development cohort to assess the similarities and differences in case mix. All patients underwent radiation therapy, 50 (48%) received cisplatin-based chemotherapy, and 67 (64%) had a surgical resection. The mean (SD) cochlear dose of radiation was 13 (12) Gy, and the mean (SD) total cisplatin dose was 238 (83) mg/m2 for those undergoing cisplatin therapy. A calibration curve demonstrated that predicted and observed posttreatment pure-tone average were not significantly different. The model predicted a posttreatment pure-tone average greater than 35 dB (a common threshold for hearing aid consideration) with a sensitivity of 73% and specificity of 67% with an area under the curve of 0.71, showing good discrimination. Clinician interviews suggest the nomogram requires careful integration into patient counseling to clarify risks and benefits for treatment.

Conclusions and relevance

The findings of this cohort study confirm this model's ability to predict posttreatment hearing outcomes in a unique population of patients. This model has the potential to inform pretreatment counseling and posttreatment hearing evaluations for this patient population.

SUBMITTER: Deutsch BC

PROVIDER: S-EPMC7729577 | biostudies-literature |

REPOSITORIES: biostudies-literature

ACCESS DATA

Similar Datasets

Project description:Importance:Accurate, accessible predictions of posttreatment hearing loss for patients with head and neck cancer prior to the initiation of treatment are a necessary part of informed patient decision-making. Objective:To develop a prediction model for postradiotherapy and/or post-cisplatin chemotherapy hearing loss for patients with head and neck cancer. Design, Setting, and Participants:A retrospective cohort study was conducted at a tertiary academic medical center among 242 patients (482 ears) with head and neck cancer who were treated with radiotherapy and/or cisplatin from October 1, 2014, to July 31, 2018, and had follow-up audiometric data available. Exposures:Radiotherapy and cisplatin chemotherapy. Main Outcomes and Measures:Patient hearing level, as measured by the mean of pure tone audiometry at 1, 2, and 4 kHz on completion of treatment. A multivariable mixed model for predicting the posttreatment pure tone average was developed using only information available to clinicians at the beginning of treatment. Results:A total of 242 patients (482 ears; 56 women and 186 men; mean [SD] age, 60 [10] years) were included in the analysis. All patients in the study received radiotherapy, and 105 (43.4%) received cisplatin chemotherapy. The mean (SD) total cumulative cisplatin dose was 298 (109) mg/m2. Patients' ears received a mean (SD) cochlear radiotherapy dose of 15 (13) Gy. The fixed-effects predictions from the predictive model agreed with 77% (95% CI, 73%-81%) of the variability in the posttreatment pure tone average. This predictive model also had a sensitivity of 80% and a specificity of 75% for predicting an observed posttreatment pure tone average greater than 35 dB (area under the receiver operating characteristic curve, 0.85). Conclusions and Relevance:To our knowledge, this study develops the first accurate prediction model of posttreatment hearing in patients with head and neck cancer that is feasible for use in the clinical setting before the initiation of treatment. This research confirms that exposure of the cochlea to cisplatin chemotherapy and radiotherapy is associated with hearing loss in patients with head and neck cancer. Finally, this research motivates future studies of ototoxic effects to better understand the adverse effects of head and neck cancer treatment.