(2017) MicroRNA-375 inhibits growth and enhances radiosensitivity in oral squamous cell carcinoma by targeting insulin like growth factor 1 receptor, Cell Physiol
Conditions that are related to mitochondrial dysfunction and reliant on FAD and FMN include Parkinsons disease, Alzheimers, migraines, Complex I deficiency, Alpers syndrome, multiple sclerosis, and Kearns Sayre syndrome.[ref] Nutrient interactions: Riboflavin also helps convert tryptophan to niacin (vitamin B3), which in turn activates vitamin B6 .[ref] It is also essential for the methylation cycle and folate-related metabolism
Lancet 297:519522 Prescott LF, Wright N (1973) The effects of hepatic and renal damage on paracetamol metabolism and excretion following overdosage.: a pharmacokinetic study
Concomitant deficiencies (iron, folate), chronic illness, or drug interactions may blunt clinical response and warrant further evaluation
But, these are not permanent and may disappear in a while