The signatories asked deputies for "the legislative process to overcome the Constitutional Court's decision to begin as a matter of urgency".

In the document entitled "Right to self-determination of gender identity and gender expression and protection of the sexual characteristics of each person", which is still open to signatures, the "diversity and scope" of the signatories is referred to.

The promoters of the initiative, several associations, collectives and individuals, highlighted the "multiplicity of people, in terms of age groups, gender, gender identity and gender expression, occupations and public notoriety, from totally anonymous persons to people in academia, health sciences, politics, culture and activism".

Anália Torres, Miguel Vale de Almeida, Rui Bebiano, Alexandra Araújo Coimbra, Bruno Maia, Ana Gomes, Francisco Louçã, Marisa Matias, Ana Zanatti, André Gago, Helena Ferro de Gouveia, Hugo van der Ding, José Luís Peixoto, Ana Marques Prata, Anabela Rocha and Paulo Côrte-Real are some of the signatories of the open letter.

In a statement, the promoters stressed that the document is signed by citizens "regardless of whether or not they identify as LGBTQI+, because the present issue concerns all people, as it constitutes an imperative of citizenship".

On 29 June the Constitutional Court (TC) "rejected" the Government's regulation of the self-determination of gender identity in schools, as it considered that the matter is an exclusive domain of the Assembly of the Republic.

However, the court did not rule "on the substance of those rules, with regard to the prohibition of ideological programming of education by the State and the freedom of programming of private education", says a statement issued by the institution, adding that this "decision leaves untouched the guarantee of the right to gender identity and gender expression and the prohibition of discrimination in the education system".

The TC held that law no. 38/2018 of 07 August, regarding the self-determination of gender identity and gender expression "all concern matters of rights, freedoms and guarantees", since the Constitution establishes the "right to self-determination of gender identity and gender expression and the right to the protection of characteristics".

Therefore, the Constitutional Court considered that the content "cannot be defined by administrative regulation, as it is a reserved legislative competence" of the parliament.