scholarly journals BRAF V600E mutation in Juvenile Xanthogranuloma family neoplasms of the central nervous system (CNS-JXG): a revised diagnostic algorithm to include pediatric Erdheim-Chester disease

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
J. Picarsic ◽  
T. Pysher ◽  
H. Zhou ◽  
M. Fluchel ◽  
T. Pettit ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Diagnostic Algorithm ◽  
Braf V600e ◽  
Juvenile Xanthogranuloma ◽  
Female Ratio ◽  
Integrated Diagnosis ◽  
Erdheim Chester Disease ◽  
Erdheim Chester ◽  
Chester Disease

Abstract The family of juvenile xanthogranuloma family neoplasms (JXG) with ERK-pathway mutations are now classified within the “L” (Langerhans) group, which includes Langerhans cell histiocytosis (LCH) and Erdheim Chester disease (ECD). Although the BRAF V600E mutation constitutes the majority of molecular alterations in ECD and LCH, only three reported JXG neoplasms, all in male pediatric patients with localized central nervous system (CNS) involvement, are known to harbor the BRAF mutation. This retrospective case series seeks to redefine the clinicopathologic spectrum of pediatric CNS-JXG family neoplasms in the post-BRAF era, with a revised diagnostic algorithm to include pediatric ECD. Twenty-two CNS-JXG family lesions were retrieved from consult files with 64% (n = 14) having informative BRAF V600E mutational testing (molecular and/or VE1 immunohistochemistry). Of these, 71% (n = 10) were pediatric cases (≤18 years) and half (n = 5) harbored the BRAF V600E mutation. As compared to the BRAF wild-type cohort (WT), the BRAF V600E cohort had a similar mean age at diagnosis [BRAF V600E: 7 years (3–12 y), vs. WT: 7.6 years (1–18 y)] but demonstrated a stronger male/female ratio (BRAF V600E: 4 vs WT: 0.67), and had both more multifocal CNS disease ( BRAFV600E: 80% vs WT: 20%) and systemic disease (BRAF V600E: 40% vs WT: none). Radiographic features of CNS-JXG varied but typically included enhancing CNS mass lesion(s) with associated white matter changes in a subset of BRAF V600E neoplasms. After clinical-radiographic correlation, pediatric ECD was diagnosed in the BRAF V600E cohort. Treatment options varied, including surgical resection, chemotherapy, and targeted therapy with BRAF-inhibitor dabrafenib in one mutated case. BRAF V600E CNS-JXG neoplasms appear associated with male gender and aggressive disease presentation including pediatric ECD. We propose a revised diagnostic algorithm for CNS-JXG that includes an initial morphologic diagnosis with a final integrated diagnosis after clinical-radiographic and molecular correlation, in order to identify cases of pediatric ECD. Future studies with long-term follow-up are required to determine if pediatric BRAF V600E positive CNS-JXG neoplasms are a distinct entity in the L-group histiocytosis category or represent an expanded pediatric spectrum of ECD.

scholarly journals Evaluation of Clinicopathologic Characteristics and the BRAF V600E Mutation in Erdheim-Chester Disease Among Chinese Adults

Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 3870-3870
Author(s):  
Xin-xin Cao ◽  
Jian Sun ◽  
Jian Li ◽  
Ding-rong Zhong ◽  
Na Niu ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Disease Duration ◽  
Braf V600e Mutation ◽  
Braf V600e ◽  
Radiographic Findings ◽  
Erdheim Chester Disease ◽  
Rosai Dorfman Disease ◽  
Erdheim Chester ◽  
Chester Disease

Abstract Objectives Erdheim-Chester disease (ECD) is a rare form of histiocytosis with a broad, non-specific clinical spectrum. Here, we retrospectively evaluated the clinical and pathologic characteristics, presence of the BRAF V600E mutation, treatment options and outcomes of Chinese patients diagnosed with ECD at our center. Methods Patients diagnosed with ECD between January 2010 and April 2015 at Peking Union Medical College Hospital were included for study. We evaluated baseline characteristics, reviewed histological material, and tested for the presence of the BRAF V600E mutation using immunohistochemistry and polymerase chain reaction (PCR). Results Sixteen patients were diagnosed with ECD. Median age at diagnosis was 47 years (range, 22-61 years). Median disease duration (from the first symptom to diagnosis) was 22.5 months (range, 3-100 months). The main sites of involvement included bone (93.8%), cardiovascular region (43.8%), skin (31.3%), central nervous system (25.0%), and ¡°hairy kidney¡± (25%). Thirteen patients displayed characteristic histological features, including foamy histiocyte infiltration of polymorphic granuloma and fibrosis or xanthogranulomatosis, with CD68-positive and CD1-¦Á- negative immunostaining. Three patients (designated 3, 5 and 10) displayed CD68-positive and CD1¦Á- negative histiocyte infiltration, but not the above histological characteristics, and were thus initially misdiagnosed as Rosai-Dorfman disease. All three cases were BRAFV600E mutation-positive, leading to revision of diagnosis as ECD. Diagnosis of ECD in each case was additionally supported by typical radiographic findings. The BRAF V600E mutation was detected in 68.8% patients using PCR and 50.0% patients with immunohistochemistry. Ten patients (62.5%) received IFN-¦Á as first-line treatment, 3 patients showed improvement, 3 remained stable, 3 were too early for evaluation and 1 died. Three patients (5, 10 and 11) underwent transsphenoidal pituitary lesion surgery but were not subjected to systemic treatment, owing to the absence of symptoms and disease activity post-surgery and remained stable after a median of 16 months (range, 6-30 months) from diagnosis. Thirteen patients (81.3%) were still alive at median follow-up of 14.5 months. Conclusion ECD remains a largely overlooked disease, and increased recognition by clinicians and pathologists is necessary for effective diagnosis and treatment. The presence of the BRAF V600E mutation may facilitate discrimination of ECD from other non-Langerhans cell histiocytoses. Table 1. Characteristics and treatment of 16 patients with ECD Patient Sex/ age, years Disease duration, mo Main sites of involvement BRAF IH BRAF V600E Therapy Vital Status OS£¬mo 1 M/33 5 B N/A - IFN-6 MIU 3/wk Alive 15 2 M/22 43 S, B - - IFN-3 MIU 3/wk Alive 11 3 M/25 18 B, LN, CNS - + Pred Dead 13 4 F/28 3 S, B + + None Alive 16 5 M/60 27 B, PIT + + Surgery Alive 15 6 F/61 5 B, H, LV, R£¬CNS, MS, S N/A + IFN-6 MIU 3/wk Dead 25 7 F/23 67 S, B, H, LV - - IFN-3 MIU 3/wk Alive 19 8 M/60 43 B, P, LV, R N/A + IFN-6 MIU 3/wk Alive 14 9 M/46 84 CNS, B + + IFN-6 MIU 3/wk Alive 22 10 F/51 7 PIT + + Surgery Alive 6 11 F/36 72 PIT, B + + Surgery Alive 30 12 M/55 100 B, S, CNS, PIT - + IFN-6 MIU 3/wk Alive 3 13 F/50 11 B, H N/A + IFN-6 MIU 3/wk Alive 5 14 F/46 8 B, LV, P + + IFN-6 MIU 3/wk Alive 1 15 M/52 30 B, LV, R, P£¬E - - IFN-6 MIU 3/wk Alive 1 16 M/47 4 B, LV, R, LN - - None Dead 36 Age is at diagnosis£»disease duration is from the first symptom to diagnosis IH, immunohisochemistry; B, long bones; LN, lymph nodes; LV, large vessels; H, heart; S, skin; CNS, central nervous system; MS, maxillary sinus; PIT, pituitary gland; R, retroperitoneal; P, pericardial effusion; E, Exophthalmos; MIU, million international units; N/A, not available Disclosures No relevant conflicts of interest to declare.

scholarly journals Successful treatment with cladribine of Erdheim-Chester disease with orbital and central nervous system involvement developing after treatment of langerhans cell histiocytosis

2016 ◽  
Vol 73 (1) ◽  
pp. 83-87 ◽  
Author(s):  
Predrag Peric ◽  
Branislav Antic ◽  
Slavica Knezevic-Usaj ◽  
Olga Radic-Tasic ◽  
Sanja Radovinovic-Tasic ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Langerhans Cell Histiocytosis ◽  
Braf V600e Mutation ◽  
Langerhans Cell ◽  
Braf V600e ◽  
Cns Involvement ◽  
Erdheim Chester Disease ◽  
Erdheim Chester ◽  
Chester Disease

Introduction. Erdheim-Chester disease (ECD) is a rare, systemic form of non-Langerhans cell histiocytosis of the juvenile xantho-granuloma family with characteristic bilateral symmetrical long bone osteosclerosis, associated with xanthogranulomatous extras-keletal organ involvement. In ECD, central nervous system (CNS) and orbital lesions are frequent, and more than half of ECD patients carry the V600E mutation of the proto-oncogene BRAF. The synchronous or metachronous development of ECD and Langerhans cell histiocytosis (LCH) in the same patients is rare, and the possible connection between them is still obscure. Cladribine is a purine substrate analogue that is toxic to lymphocytes and monocytes with good hematoencephalic penetration. Case report. We presented a 23-year-old man successfully treated with cladribine due to BRAF V600E-mutation-negative ECD with bilateral orbital and CNS involvement. ECD developed metachronously, 6 years after chemotherapy for multisystem LCH with complete disease remission and remaining central diabetes insipidus. During ECD treatment, the patient received 5 single-agent chemotherapy courses of cladribine (5 mg/m2 for 5 consecutive days every 4 weeks), with a reduction in dose to 4 mg/m2 in a fifth course, delayed due to severe neutropenia and thoracic dermatomal herpes zoster infection following the fourth course. Radiologic signs of systemic and CNS disease started to resolve 3 months after the end of chemotherapy, and CNS lesions completely resolved within 2 years after the treatment. After 12-year follow-up, there was no recurrence or appearance of new systemic or CNS xanthogranu-lomatous lesions or second malignancies. Conclusion. In accordance with our findings and recommendations provided by other authors, cladribine can be considered an effective alternative treatment for ECD, especially with CNS involvement and BRAF V600E-mutation-negative status, when interferon-? as the first-line therapy fails.

Central Nervous System Complications of Erdheim-Chester Disease

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Nuh Filizoglu ◽  
Salih Ozguven ◽  
Tunc Ones ◽  
Halil Turgut Turoglu ◽  
Tanju Yusuf Erdil
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Erdheim Chester Disease ◽  
Erdheim Chester ◽  
Chester Disease

Uncommon histiocytic disorders: Rosai–Dorfman, juvenile xanthogranuloma, and Erdheim–Chester disease

Hematology ◽  
2015 ◽  
Vol 2015 (1) ◽  
pp. 571-578 ◽  
Author(s):  
Julien Haroche ◽  
Oussama Abla
Keyword(s):  
Braf V600e Mutation ◽  
Braf V600e ◽  
Juvenile Myelomonocytic Leukemia ◽  
Juvenile Xanthogranuloma ◽  
Poor Prognostic Factor ◽  
Erdheim Chester Disease ◽  
Recurrent Mutations ◽  
Life Threatening ◽  
Erdheim Chester ◽  
Chester Disease

Rosai–Dorfman disease (RDD), juvenile xanthogranuloma (JXG), and Erdheim–Chester disease (ECD) are non-Langerhans cell (non-LCH) disorders arising from either a dendritic or a macrophage cell. RDD is a benign disorder that presents with massive lymphadenopathy, but can have extranodal involvement. In most cases, RDD is self-limited and observation is the standard approach. Treatment is restricted to patients with life-threatening, multiple-relapsing, or autoimmune-associated disease. JXG is a pediatric histiocytosis characterized by xanthomatous skin lesions that usually resolve spontaneously. In a minority of cases, systemic disease can occur and can be life threatening. Juvenile myelomonocytic leukemia (JMML), as well as germline mutations in NF1 and NF2, have been reported in children with JXG. Recent whole-exome sequencing of JXG cases did not show the BRAF-V600E mutation, although 1 patient had PI3KCD mutation. ECD is an adult histiocytosis characterized by symmetrical long bone involvement, cardiovascular infiltration, a hairy kidney, and retroperitoneal fibrosis. Central nervous system involvement is a poor prognostic factor. Interferon-α is the standard as front-line therapy, although cladribine and anakinra can be effective in a few refractory cases. More than one-half of ECD patients carry the BRAF-V600E mutation. Currently, >40 patients worldwide with multisystemic, refractory BRAF-V600E+ ECD have been treated with vemurafenib, a BRAF inhibitor, which was found to be highly effective. Other recurrent mutations of the MAP kinase and PI3K pathways have been described in ECD. These discoveries may redefine ECD, JXG, and LCH as inflammatory myeloid neoplasms, which may lead to new targeted therapies.

scholarly journals Uncommon histiocytic disorders: Rosai–Dorfman, juvenile xanthogranuloma, and Erdheim–Chester disease

Hematology ◽  
2015 ◽  
Vol 2015 (1) ◽  
pp. 571-578 ◽  
Author(s):  
Julien Haroche ◽  
Oussama Abla
Keyword(s):  
Braf V600e Mutation ◽  
Braf V600e ◽  
Juvenile Myelomonocytic Leukemia ◽  
Juvenile Xanthogranuloma ◽  
Poor Prognostic Factor ◽  
Erdheim Chester Disease ◽  
Recurrent Mutations ◽  
Life Threatening ◽  
Erdheim Chester ◽  
Chester Disease

Abstract Rosai–Dorfman disease (RDD), juvenile xanthogranuloma (JXG), and Erdheim–Chester disease (ECD) are non-Langerhans cell (non-LCH) disorders arising from either a dendritic or a macrophage cell. RDD is a benign disorder that presents with massive lymphadenopathy, but can have extranodal involvement. In most cases, RDD is self-limited and observation is the standard approach. Treatment is restricted to patients with life-threatening, multiple-relapsing, or autoimmune-associated disease. JXG is a pediatric histiocytosis characterized by xanthomatous skin lesions that usually resolve spontaneously. In a minority of cases, systemic disease can occur and can be life threatening. Juvenile myelomonocytic leukemia (JMML), as well as germline mutations in NF1 and NF2, have been reported in children with JXG. Recent whole-exome sequencing of JXG cases did not show the BRAF-V600E mutation, although 1 patient had PI3KCD mutation. ECD is an adult histiocytosis characterized by symmetrical long bone involvement, cardiovascular infiltration, a hairy kidney, and retroperitoneal fibrosis. Central nervous system involvement is a poor prognostic factor. Interferon-α is the standard as front-line therapy, although cladribine and anakinra can be effective in a few refractory cases. More than one-half of ECD patients carry the BRAF-V600E mutation. Currently, >40 patients worldwide with multisystemic, refractory BRAF-V600E+ ECD have been treated with vemurafenib, a BRAF inhibitor, which was found to be highly effective. Other recurrent mutations of the MAP kinase and PI3K pathways have been described in ECD. These discoveries may redefine ECD, JXG, and LCH as inflammatory myeloid neoplasms, which may lead to new targeted therapies.

scholarly journals Erdheim-Chester Disease of the Central Nervous System: New Manifestations of a Rare Disease

2011 ◽  
Vol 32 (11) ◽  
pp. 2126-2131 ◽  
Author(s):  
P. Sedrak ◽  
L. Ketonen ◽  
P. Hou ◽  
N. Guha-Thakurta ◽  
M.D. Williams ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Rare Disease ◽  
Erdheim Chester Disease ◽  
The Central Nervous System ◽  
Erdheim Chester ◽  
Chester Disease

scholarly journals High prevalence of BRAF V600E mutations in Erdheim-Chester disease but not in other non-Langerhans cell histiocytoses

Blood ◽  
2012 ◽  
Vol 120 (13) ◽  
pp. 2700-2703 ◽  
Author(s):  
Julien Haroche ◽  
Frédéric Charlotte ◽  
Laurent Arnaud ◽  
Andreas von Deimling ◽  
Zofia Hélias-Rodzewicz ◽  
...  
Keyword(s):  
Unknown Origin ◽  
Langerhans Cell ◽  
Braf V600e ◽  
Juvenile Xanthogranuloma ◽  
Braf Mutations ◽  
Dendritic Cell Sarcoma ◽  
Erdheim Chester Disease ◽  
Rosai Dorfman Disease ◽  
Erdheim Chester ◽  
Chester Disease

Abstract Histiocytoses are rare disorders of unknown origin with highly heterogeneous prognosis. BRAF mutations have been observed in Langerhans cell histiocytosis (LCH). We investigated the frequency of BRAF mutations in several types of histiocytoses. Histology from 127 patients with histiocytoses were reviewed. Detection of BRAFV600 mutations was performed by pyrosequencing of DNA extracted from paraffin embedded samples. Diagnoses of Erdheim-Chester disease (ECD), LCH, Rosai-Dorfman disease, juvenile xanthogranuloma, histiocytic sarcoma, xanthoma disseminatum, interdigitating dendritic cell sarcoma, and necrobiotic xanthogranuloma were performed in 46, 39, 23, 12, 3, 2, 1, and 1 patients, respectively. BRAF status was obtained in 93 cases. BRAFV600E mutations were detected in 13 of 24 (54%) ECD, 11 of 29 (38%) LCH, and none of the other histiocytoses. Four patients with ECD died of disease. The high frequency of BRAFV600E in LCH and ECD suggests a common origin of these diseases. Treatment with vemurafenib should be investigated in patients with malignant BRAFV600E histiocytosis.

scholarly journals Intracranial mass lesions and skin discoloration in the armpits as unusual clues to Erdheim-Chester disease: a case report

BMC Neurology ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Pedro Gustavo Barros Rodrigues ◽  
Isabelle de Sousa Pereira ◽  
Valter Barbalho Lima Filho ◽  
Daniel Aguiar Dias ◽  
Paulo Ribeiro Nóbrega ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Central Nervous System Involvement ◽  
Skin Lesions ◽  
Neurological Signs ◽  
Intracranial Mass ◽  
Erdheim Chester Disease ◽  
Mass Lesions ◽  
Erdheim Chester ◽  
Chester Disease

Abstract Background Erdheim–Chester disease (ECD) is a non-Langerhans histiocytosis that results in multi-organ disease involving the skin, bones, lungs and kidneys. Central nervous system (CNS) involvement occurs in about 50 % of patients, and diabetes insipidus, visual disturbances, and cerebellar ataxia are the most frequent neurological signs. We report a case of Erdheim-Chester disease with central nervous system involvement in the form of enhancing intracranial mass lesions with massive edema. Case presentation The patient presented with vertigo, ataxia, encephalopathy and pyramidal signs. Diagnosis was suggested by xanthomatous skin lesions and a biopsy was compatible with Erdheim-Chester disease demonstrating xanthogranulomas CD68 positive (clone KP1) and CD1a and S100 negative. Testing for BRAF mutation was negative, which precluded treatment with Vemurafenib. Treatment with steroids and interferon resulted in improvement of neurological signs and regression of edema on MRI. Conclusions The diagnosis of Erdheim-Chester disease should be considered in intracranial mass lesions. Xanthomatous skin lesions are a clue to the diagnosis.

Sign in / Sign up

Export Citation Format

Share Document