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Gernez Y, Narula M, Cepika AM, Valdes Camacho J, Hoyte EG, Mouradian K, Glader B, Singh D, Sathi B, Rao L, Tolin AL, Weinberg KI, Lewis DB, Bacchetta R, Weinacht KG. Case report: Refractory Evans syndrome in two patients with spondyloenchondrodysplasia with immune dysregulation treated successfully with JAK1/JAK2 inhibition. Front Immunol 2024; 14:1328005. [PMID: 38347954 PMCID: PMC10859398 DOI: 10.3389/fimmu.2023.1328005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 12/28/2023] [Indexed: 02/15/2024] Open
Abstract
Biallelic mutations in the ACP5 gene cause spondyloenchondrodysplasia with immune dysregulation (SPENCDI). SPENCDI is characterized by the phenotypic triad of skeletal dysplasia, innate and adaptive immune dysfunction, and variable neurologic findings ranging from asymptomatic brain calcifications to severe developmental delay with spasticity. Immune dysregulation in SPENCDI is often refractory to standard immunosuppressive treatments. Here, we present the cases of two patients with SPENCDI and recalcitrant autoimmune cytopenias who demonstrated a favorable clinical response to targeted JAK inhibition over a period of more than 3 years. One of the patients exhibited steadily rising IgG levels and a bone marrow biopsy revealed smoldering multiple myeloma. A review of the literature uncovered that approximately half of the SPENCDI patients reported to date exhibited increased IgG levels. Screening for multiple myeloma in SPENCDI patients with rising IgG levels should therefore be considered.
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Affiliation(s)
- Yael Gernez
- Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
| | - Mansi Narula
- Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
| | - Alma-Martina Cepika
- Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
| | - Juanita Valdes Camacho
- Division of Allergy and Immunology, Department of Pediatrics, Louisiana State University (LSU) Health, Shreveport, LA, United States
| | - Elisabeth G. Hoyte
- Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
| | - Kirsten Mouradian
- Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
| | - Bertil Glader
- Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
| | - Deepika Singh
- Division of Rheumatology, Department of Pediatrics, Valley Children Hospital, Madera, CA, United States
| | - Bindu Sathi
- Division of Hematology, Department of Pediatrics, Valley Children Hospital, Madera, CA, United States
| | - Latha Rao
- Division of Hematology, Department of Pediatrics, Valley Children Hospital, Madera, CA, United States
| | - Ana L. Tolin
- Division of Immunology, Department of Pediatrics, Hospital Pediatrico Dr. Humberto Notti, Mendoza, Argentina
| | - Kenneth I. Weinberg
- Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
| | - David B. Lewis
- Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
| | - Rosa Bacchetta
- Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
| | - Katja G. Weinacht
- Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Department of Pediatrics, Stanford School of Medicine, Stanford, CA, United States
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David C, Frémond ML. [When to consider type I interferonopathy in adulthood?]. Rev Med Interne 2022; 43:347-355. [PMID: 35177256 DOI: 10.1016/j.revmed.2021.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/15/2021] [Accepted: 11/28/2021] [Indexed: 10/19/2022]
Abstract
Type I interferonopathies (IP1) are a heterogeneous group of Mendelian diseases characterized by overactivation of the type I interferon (IFN) pathway. They are caused by monogenic (rarely digenic) mutations of proteins involved in this key pathway of innate immunity. IP1 transmission can be dominant, recessive or X-linked and penetrance differs from one IP1 to another. The clinical spectrum is broad and mainly includes central nervous system involvement with calcifications of the basal ganglia, skin disorders such as cutaneous vasculitis that can be mutilating. Joint disorders including non-destructive deforming arthropathy, pulmonary involvement such as intra-alveolar haemorrhage or interstitial lung disease, and haematological symptoms with cytopenia and/or immune deficiency are also seen. The clinical manifestations vary from one IP1 to another and their spectrum is constantly expanding along with the description of new IP1s and patients. The inflammatory syndrome is generally mild and autoimmune stigmata are frequently found. Almost all patients display overexpression of the type I IFN pathway detected, for instance, by the evaluation of IFN-stimulated genes expression, referred as "interferon signature". The related morbidity and mortality are high. However, the beneficial effect on certain symptoms of targeted therapies inhibiting type I IFN, such as JAK inhibitors, has led to a promising improvement in the management of these patients.
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Affiliation(s)
- C David
- Université de Paris, Institut Imagine, laboratoire de neurogénétique et neuroinflammation, 24, boulevard du Montparnasse, 75015 Paris, France
| | - M-L Frémond
- Université de Paris, Institut Imagine, laboratoire de neurogénétique et neuroinflammation, 24, boulevard du Montparnasse, 75015 Paris, France; Unité d'immuno-hématologie et rhumatologie pédiatriques, centre de référence des maladies rhumatologiques et auto-immunes systémiques rares en pédiatrie (RAISE), hôpital Necker-Enfants-Malades, Centre - Université de Paris, AP-HP, 75015 Paris, France.
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