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1-min read

Novel Model to Predict Lung Cancer Survival Developed

The findings suggests that the model, using serial image scans of tumours from patients with non-small cell lung cancer (NSCLC), predicted treatment response and survival outcomes better than standard clinical parameters.

Updated:April 22, 2019, 4:01 PM IST
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Novel Model to Predict Lung Cancer Survival Developed
Image for representation. (Photo courtesy: AFP Relaxnews/ anilakkus/ Istock.com)
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Researchers have developed a deep-learning model that may help predict lung cancer survival and outcomes.

The findings suggests that the model, using serial image scans of tumours from patients with non-small cell lung cancer (NSCLC), predicted treatment response and survival outcomes better than standard clinical parameters.

"Our research demonstrates that deep-learning models integrating routine imaging scans obtained at multiple time points can improve predictions of survival and cancer-specific outcomes for lung cancer," said Hugo Aerts, Associate Professor at Harvard University.

"By comparison, a standard clinical model relying on stage, gender, age, tumour grade, performance, smoking status, and tumour size could not reliably predict two-year survival or treatment response," Aerts added.

For the study, published in the journal Clinical Cancer Research, the researchers built deep-learning models to see if they could extract more predictive insights as cancers evolve.

They trained their models using serial CT scans of 179 patients with stage 3 NSCLC who had been treated with chemoradiation. They included up to four images per patient obtained routinely before treatment and at one, three, and six months after treatment for a total of 581 images.

The investigators analysed the model's ability to make significant cancer outcome predictions with two datasets -- the training dataset of 581 images and an independent validation dataset of 178 images from 89 patients with non-small cell lung cancer who had been treated with chemoradiation and surgery.

The team found that the models' performance improved with the addition of each follow-up scan. The area under the curve, a measure of the model's accuracy, for predicting two-year survival based on pre-treatment scans alone was 0.58, which improved significantly to 0.74 after adding all available follow-up scans.

Patients classed as having low risk for mortality by the model had six-fold improved overall survival compared with those classed as having high risk.

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