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  1. Fulltext An international perspective on illness identity in adults with congenital heart disease: Associations with patient characteristics, national culture and well-being
    Van Laere E, Luyckx K, Van Bulck L, Kovacs AH, Goossens E, Ladak LA, et al.
    Int J Cardiol, 2026 Dec 15;465:134954.
    PMID: 42843459 DOI: 10.1016/j.ijcard.2026.134954
    BACKGROUND: Illness identity refers to the degree to which a severe health condition is integrated into a person's sense of identity. Patients with congenital heart disease (CHD) vary in how they relate their CHD to their identity, which has implications for mental health, quality of life, and perceived health. This study explored inter-country variation in illness identity, and examined associations with patient characteristics and patient-reported outcomes in a large, international sample.

    METHODS: This study utilized data from the APPROACH-IS-II project which included 8415 patients from 32 countries (collected between 2019 and 2022). Patients completed questionnaires on patient characteristics (i.e., age, sex, marital status, employment, education, ethnicity, NYHA class, and CHD complexity), illness identity, and patient-reported outcomes (i.e., depressive symptoms, anxiety, quality of life, self-perceived [mental and physical] health). National culture was included using Hofstede's cultural dimensions. Data were analyzed using multivariable generalized linear mixed models.

    RESULTS: Inter-country variation was observed in the illness identity dimensions. Patient characteristics (i.e., sex, age, marital status, employment, education, NYHA class, and CHD complexity) and national culture were related to differences in how patients related their CHD to their identity. Acceptance and enrichment were related to better well-being, quality of life, and self-perceived health, while engulfment and rejection were associated with worse patient-reported outcomes.

    CONCLUSIONS: Personal and contextual factors were associated with differences in the illness identity dimensions. Moreover, the present study substantiated the unique value of illness identity dimensions in explaining individual differences in well-being, quality of life, and self-perceived health in this population.

  2. Fulltext Germline mutations in a G protein identify signaling cross-talk in T cells
    Ham H, Jing H, Lamborn IT, Kober MM, Koval A, Berchiche YA, et al.
    Science, 2024 Sep 20;385(6715):eadd8947.
    PMID: 39298586 DOI: 10.1126/science.add8947
    Humans with monogenic inborn errors responsible for extreme disease phenotypes can reveal essential physiological pathways. We investigated germline mutations in GNAI2, which encodes Gαi2, a key component in heterotrimeric G protein signal transduction usually thought to regulate adenylyl cyclase-mediated cyclic adenosine monophosphate (cAMP) production. Patients with activating Gαi2 mutations had clinical presentations that included impaired immunity. Mutant Gαi2 impaired cell migration and augmented responses to T cell receptor (TCR) stimulation. We found that mutant Gαi2 influenced TCR signaling by sequestering the guanosine triphosphatase (GTPase)-activating protein RASA2, thereby promoting RAS activation and increasing downstream extracellular signal-regulated kinase (ERK)/mitogen-activated protein kinase (MAPK) and phosphatidylinositol 3-kinase (PI3K)-AKT S6 signaling to drive cellular growth and proliferation.
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