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Jemma Haines from the Royal College of Speech and Language Therapists said: "Dr Simonyan’s work gives promising data for an effective alternative treatment option and future hope to our service users who suffer this debilitating communication disorder."

Aphasia is a communication disorder and feature of FTD, an incurable neurological disease that can cause unexplained personality changes and apathy, as well as struggles with decision-making, speaking and language comprehension.

The announcement came about one year after he retired from acting, citing a communication disorder known as aphasia, which had since progressed.

According to the National Aphasia Assn., aphasia is an acquired communication disorder that impairs the ability to process language but does not affect intelligence.

According to the National Aphasia Assn., the condition is an acquired communication disorder that impairs the ability to process language but does not affect intelligence.