AUTHOR=Garcia-Etxebarria Koldo , Gayoso Lucía , Arzallus Teresa , Montalvo Isabel , Lizasoain Jacobo , Izagirre Arantzazu , Ezkurra Ander , D’Amato Mauro , Etxeberria Usune , Bujanda Luis 

TITLE=RETRACTED: A 1 year course of starch- and sucrose-reduced diet used by irritable bowel syndrome patients with diarrhoea and the effect of genetic variants

JOURNAL=Frontiers in Nutrition

VOLUME=10

YEAR=2023

URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2023.1268538

DOI=10.3389/fnut.2023.1268538

ISSN=2296-861X

ABSTRACT=<sec id="sec1"><title>Background</title><p>Irritable bowel syndrome is a heterogeneous syndrome and it is difficult to find an effective treatment. Previously, a starch- and sucrose-reduced diet (SSRD) demonstrated promising short-term outcomes. It was proposed that genetic variants in the sucrose-isomaltase gene might influence this success. Our aim in this work was to extend the follow-up study to 1 year and to analyse the effect of the genetic variants of genes involved in starch and sucrose metabolism.</p></sec><sec id="sec2"><title>Methods</title><p>IBS-SSS questionnaire, IBS-QoL questionnaire and questionnaires about adherence, difficulty and food assessment were sent to 34 patients after 6 months and 1 year after the end of the dietary intervention. In addition, 11 genes involved in sucrose and starch metabolism were sequenced.</p></sec><sec id="sec3"><title>Results</title><p>Twenty-three participants responded to the 6 months follow-up and 16 to the 1 year follow-up. IBS-SSS total value increased 59.71% in the 6 months follow-up compared with the end of the intervention (<italic>p</italic> = 0.0018), and 55.39% in the 1 year follow-up (<italic>p</italic> = 0.0166); while IBS-QoL score decreased 24.09% (<italic>p</italic> = 0.0002) and 18.07% (<italic>p</italic> = 0.0022), respectively. The adherence decreased by 29.11% (<italic>p</italic> = 4.8 × 10<sup>−5</sup>) and 27.21% (<italic>p</italic> = 0.0054), respectively. In addition, carriers of pathogenic variants on the <italic>SI</italic> gene showed a slightly better performance than non-carriers. Finally, the participants showed less satisfaction over time with 18 allowed foods in the diet.</p></sec><sec id="sec4"><title>Conclusion</title><p>Over time the SSRD is difficult to follow and the genotype might affect the performance of the diet. Since this diet could be a promising therapeutic option, a larger cohort needs to be analysed to validate the results and to compare it with other diets.</p></sec>