Professor Peter Barrett-Lee is the Medical director at Velindre Cancer Centre. A new drug Kadcyla is available for patients to use today. At the moment it can only be used to prolong the life of suffers in the later stages of breast-cancer.
But Professor Peter Barrett-Lee says in the future, the drug could be further developed 'to cure breast cancer.'
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The 75-year-old has opened up about losing his wife Linda in April. He says singing has saved his life.
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Stephanie Owen says her ex-partner became controlling, before he began following her and bombarding her with phone calls, texts and emails.