Composition for the treatment of antibody deficiencies
US11718661B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 29, 2019 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Oct 29, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07K2317/52
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention is in the field of therapy of antibody deficiencies. Inventors demonstrate for the first time in both controls and IgA-deficient patients, systemic anti-microbiota IgG responses correlate with reduced inflammation suggesting that systemic IgG responses contribute to the gut microbiota confinement. Furthermore, SIgAd-associated inflammation is inversely correlated with systemic anti-commensal IgG responses, which may thus serve as a second line of defense. Altogether, these data suggest that systemic IgG and intestinal IgA cooperate in different body compartments to limit systemic pro-inflammatory pathways. As selective IgA deficient patients harbour elevated seric anti-commensal IgG levels, these findings suggest that in selective IgA deficiency, microbiota confinement is obtained at the price of a strong inflammatory response. Accordingly, the invention relates to a composition containing immunoglobulins A (IgA), more particularly secretory IgA, for use by oral administration in the prevention or treatment of antibody deficiencies such as SIgAd (Selective IgA deficiency) or common variable immunodeficiency (CVID) and associated inflammatory diseases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.