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The value of CXorf67 and H3K27me3 for diagnosing germ cell tumors in central nervous system / 中华病理学杂志
Chinese Journal of Pathology ; (12): 407-412, 2022.
Artículo en Chino | WPRIM | ID: wpr-935554
ABSTRACT

Objective:

To investigate immunohistochemical patterns of CXorf67 and H3K27me3 proteins in central nervous system germ cell tumors (GCTs) and to assess their values in both diagnosis and differential diagnosis.

Methods:

A total of 370 cases of central nervous system GCTs were collected from 2013 to 2020 at Huashan Hospital of Fudan University, Shanghai, China. The expression of CXorf67, H3K27me3 and commonly-used GCT markers including OCT4, PLAP, CD117, D2-40, and CD30 by immunohistochemistry (EnVision method) was examined in different subtypes of central nervous system GCTs. The sensitivity and specificity of each marker were compared by contingency table and area under receiver operating characteristic (ROC) curve.

Results:

Of the 370 cases there were 282 males and 88 females with a mean age of 19 years and a median age of 17 years (range, 2-57 years). Among the GCTs with germinoma, the proportions of male patients and the patients with GCT located in sellar region were both higher than those of GCTs without germinoma (P<0.05), respectively. CXorf67 was present in the nuclei of germinoma and normal germ cells, but not in other subtypes of GCT. H3K27me3 was negative in germinoma, but positive in the nuclei of surrounding normal cells and GCTs other than germinoma. In the 283 GCTs with germinoma components, the expression rate of CXorf67 was 90.5% (256/283), but no cases were positive for H3K27me3. There was also an inverse correlation between them (r2=-0.831, P<0.01). The expression rates of PLAP, OCT4, CD117 and D2-40 were 81.2% (231/283), 89.4% (253/283), 73.9% (209/283) and 88.3% (250/283), respectively. In 63 mixed GCTs with germinoma components, the expression rate of CXorf67 was 84.1% (53/63), while all cases were negative for H3K27me3. The expression rates of PLAP, OCT4, CD117 and D2-40 were 79.4% (50/63), 79.4% (50/63), 66.7% (42/63) and 87.3% (55/63), respectively. The 6 markers with largest area under ROC curve in ranking order were H3K27me3, CXorf67, D2-40, OCT4, PLAP and CD117 (P<0.05).

Conclusions:

CXorf67 and H3K27me3 have high sensitivity and high specificity in diagnosing germinoma. There is a significant inverse correlation between them. Therefore, they can both be used as new specific immunohistochemical markers for the diagnosis of GCTs.
Asunto(s)
Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Factores de Transcripción / Neoplasias Encefálicas / Histonas / Sistema Nervioso Central / China / Neoplasias del Sistema Nervioso Central / Proteínas Oncogénicas / Germinoma / Neoplasias de Células Germinales y Embrionarias Tipo de estudio: Estudio diagnóstico / Estudio pronóstico Límite: Adolescente / Adulto / Niño / Child, preschool / Femenino / Humanos / Masculino País/Región como asunto: Asia Idioma: Chino Revista: Chinese Journal of Pathology Año: 2022 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Factores de Transcripción / Neoplasias Encefálicas / Histonas / Sistema Nervioso Central / China / Neoplasias del Sistema Nervioso Central / Proteínas Oncogénicas / Germinoma / Neoplasias de Células Germinales y Embrionarias Tipo de estudio: Estudio diagnóstico / Estudio pronóstico Límite: Adolescente / Adulto / Niño / Child, preschool / Femenino / Humanos / Masculino País/Región como asunto: Asia Idioma: Chino Revista: Chinese Journal of Pathology Año: 2022 Tipo del documento: Artículo