# Article 5 — Chair and Vice-Chair **Commission Implementing Regulation (EU) 2025/454 · binding · OJ L, 2025/454, 10.3.2025 · dated 7 Mar 2025 [in force]** *In force · Commission Implementing Regulation (EU) 2025/454, OJ L, 2025/454, 10.3.2025 · Checked against EUR-Lex on 26 Oct 2026 · [Official source](https://eur-lex.europa.eu/eli/reg_impl/2025/454/oj/eng)* 1. At the beginning of each term of office referred to in Article 4, the Commission shall appoint a Chair and a Vice-Chair from among the members of the scientific panel. To that end, the scientific panel shall, acting by simple majority of its members, recommend a Chair and a Vice-Chair from among its members. 2. The term of office of the Chair and Vice-Chair shall follow the term of office of the scientific panel referred to in Article 4 and shall be renewable once. Any replacement of the Chair or Vice-Chair during the term of office shall take place according to the procedure referred to in paragraph 1 and shall be valid for the remainder of the term.