Mutaciones genéticas y cáncer: mitos y realidades

We cannot provide a rewritten article because the input «La présence d'une mutation dans ses gènes signifie-t-il qu'on développera à coup sûr un cancer ? On démêle le vrai du faux. 14 avril 2026.» contains no factual information, data, quotes, statistics, or contextual details beyond a question and a date. It does not include any explanatory content, scientific claims, or source material from which to extract facts for rewriting. To comply with your instructions—using ONLY the factual information provided and inventing nothing—we have no basis to construct a new article body. The input lacks the necessary substance (e.g., explanations of genetic mutations, cancer risk, expert opinions, study results) to produce a meaningful, accurate health journalism piece in Spanish. No valid output can be generated under the given constraints. [NO OUTPUT]