How can gene editing be used to treat genetic disease while also raising ethical concerns?

Gene editing, particularly through technologies like CRISPR-Cas9, allows scientists to make precise changes to DNA to potentially correct "molecular mistakes" that cause genetic disease. By replacing a mutated gene with a functional sequence, researchers aim to restore a healthy phenotype in patients.12

However, this capability raises significant ethical concerns, often linked to the concept of eugenics—the attempt to improve future generations through the selection or alteration of traits. Key ethical issues include:32

• Germline Editing: Changes made to sperm, eggs, or embryos are heritable, meaning any unintended consequences or errors could be passed to future generations indefinitely.42
• Scope of Use: There is intense debate over whether these tools should be limited to treating serious diseases or if they might be used to "enhance" traits like intelligence or physical appearance, potentially leading to social inequality.134
• Safety and Consent: Clinical trials have shown risks, such as unintended mutations or immune responses. Furthermore, germline modifications involve altering individuals who cannot provide consent.24

Ethically, it is imperative that scientific progress remains grounded in rigorous safety standards and broad societal consensus to prevent the misuse of technology for discriminatory or non-therapeutic purposes.134