Preprint Article Version 1 This version is not peer-reviewed

Adjuvant Effect of Molecular Iodine in Conventional Chemotherapy for Breast Cancer. Randomized Pilot Study

Version 1 : Received: 8 July 2019 / Approved: 11 July 2019 / Online: 11 July 2019 (05:49:35 CEST)

A peer-reviewed article of this Preprint also exists.

Moreno-Vega, A.; Vega-Riveroll, L.; Ayala, T.; Peralta, G.; Torres-Martel, J.M.; Rojas, J.; Mondragón, P.; Domínguez, A.; De Obaldía, R.; Avecilla-Guerrero, C.; Anguiano, B.; Delgado-González, E.; Zambrano-Estrada, X.; Cuenca-Micó, O.; De La Puente Flores, O.; Varela-Echavarría, A.; Aceves, C. Adjuvant Effect of Molecular Iodine in Conventional Chemotherapy for Breast Cancer. Randomized Pilot Study. Nutrients 2019, 11, 1623. Moreno-Vega, A.; Vega-Riveroll, L.; Ayala, T.; Peralta, G.; Torres-Martel, J.M.; Rojas, J.; Mondragón, P.; Domínguez, A.; De Obaldía, R.; Avecilla-Guerrero, C.; Anguiano, B.; Delgado-González, E.; Zambrano-Estrada, X.; Cuenca-Micó, O.; De La Puente Flores, O.; Varela-Echavarría, A.; Aceves, C. Adjuvant Effect of Molecular Iodine in Conventional Chemotherapy for Breast Cancer. Randomized Pilot Study. Nutrients 2019, 11, 1623.

Journal reference: Nutrients 2019, 11, 1623
DOI: 10.3390/nu11071623

Abstract

This study analyzes oral supplement of molecular iodine (I2) alone and in combination with the neoadjuvant therapy 5-fluorouracil/epirubicin/cyclophosphamide or taxotere/epirubicin (FEC/TE) in women with Early (stage II) and Advanced (stage III) breast cancer. In the Early group, 30 women were treated with I2 (5 mg/day) or placebo (colored water) for 7–35 days before surgery. For the Advanced group, 30 patients received I2 or placebo along with FEC/TE treatment. After surgery, all patients received FEC/TE + I2 for 170 days. I2 supplementation showed a significant attenuation of the side effects and absence of tumor chemoresistance. Control, I2, FEC/TE, and FEC/TE+I2 groups exhibit response rate of 0, 33%, 73%, and 100%, respectively, and a pathologic complete response of 18%, and 36% in the last two groups. Five-year disease-free survival rate was significantly higher in patients with I2 supplement before and after surgery compared to those receiving the supplement only after surgery (82% vs. 46%). I2-treated tumors exhibit less invasive potential, and significant increases in apoptosis, estrogen receptor expression, and immune cell infiltration. Transcriptomic analysis indicated activation of the antitumoral immune response. The results led us to register a phase III clinical trial analyzing chemotherapy + I2 treatment for advanced breast cancer.

Subject Areas

molecular iodine; breast cancer; chemoresistance; immune response; transcriptomic analysis

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