Fredrik Mertens

Expression levels of HMGA2in adipocytic tumors correlate with morphologic and cytogenetic subgroups (2009)

Bartuma, Hammurabi, Panagopoulos, Ioannis, Collin, Anna, Trombetta, Domenico, Domanski, Henryk A, Mandahl, Nils, ...

Abstract Background The HMGA2 gene encodes a protein that alters chromatin structure. Deregulation, typically through chromosomal rearrangements, of HMGA2 has an important role in the development of...

Comparison of cisplatin sensitivity and the 18F fluoro-2-deoxy 2 glucose uptake with proliferation parameters and gene expression in squamous cell carcinoma cell lines of the head and neck (2009)

Henriksson, Eva, Kjellén, Elisabeth, Baldetorp, Bo, Bendahl, Pär-Ola, Borg, Åke, Brun, Eva, ...

Abstract Background The survival of patients with locally advanced head and neck cancer is still poor, with 5-year survival rates of 24–35%. The identification of prognostic and predictive markers...

Rearrangement of the COL12A1 and COL4A5 genes in subungual exostosis: molecular cytogenetic delineation of the tumor-specific translocation t(X;6)(q13-14;q22) (2006)

Panagopoulos, Ioannis, Mandahl, Nils, Mertens, Fredrik, ...

Subungual exostosis is a benign bone- and cartilage-producing tumor occurring in the hands and feet of children and young adults. The recent identification of a recurrent chromosomal translocation...

Clear cell hidradenoma of the skin-a third tumor type with a t(11;19)--associated TORC1-MAML2 gene fusion (2005)

Winnes, Marta, Gorunova, Ludmila, Mertens, Fredrik, Enlund, Fredrik, ...

Recent studies have shown that the t(11;19)(q21;p13) translocation in mucoepidermoid carcinomas and benign Warthin's tumors results in a fusion of the N-terminal CREB-binding domain of the cAMP...

Activation of the GLI oncogene through fusion with the beta-actin gene (ACTB) in a group of distinctive pericytic neoplasms: pericytoma with t(7;12) (2004)

Fletcher, Christopher D M, Mertens, Fredrik, Fletcher, Jonathan A, Perez-Atayde, Antonio R, Hicks, M John, ...

Activation of the GLI oncogene is an important step in the sonic hedgehog signaling pathway, and leads to, eg, tissue-specific cell proliferation during embryogenesis. GLI activity in adult tissues...

Clustering of deletions on chromosome 13 in benign and low-malignant lipomatous tumors (2003)

Pedeutour, Florence, Domanski, Henryk A, Höglund, Mattias, Bauer, Henrik C F, ...

Deletions and structural rearrangements of the long arm of chromosome 13 are frequently observed in benign and low-malignant lipomatous tumors, but nothing is known about their molecular genetic...

Fusion of the FUS and BBF2H7 genes in low grade fibromyxoid sarcoma (2003)

Storlazzi, Clelia Tiziana, Mertens, Fredrik, Nascimento, Antonio, Isaksson, Margareth, Wejde, Johan, Brosjö, Otte, ...

The FUSgene at 16p11 fuses with DDIT3and ATF1 as the result of translocations with chromosome band 12q13 in myxoid liposarcoma and angiomatoid fibrous histiocytoma, respectively, and with ERG as the...

Fusion of the FUS and BBF2H7 genes in low grade fibromyxoid sarcoma (2003)

Storlazzi, Clelia Tiziana, Mertens, Fredrik, Nascimento, Antonio, Isaksson, Margareth, Wejde, Johan, Brosjö, Otte, ...

The FUS gene at 16p11 fuses with DDIT3 and ATF1 as the result of translocations with chromosome band 12q13 in myxoid liposarcoma and angiomatoid fibrous histiocytoma, respectively, and with ERG as...

Fusion of the FUS and BBF2H7 genes in low grade fibromyxoid sarcoma (2003)

Storlazzi, Clelia Tiziana, Mertens, Fredrik, Nascimento, Antonio, Isaksson, Margareth, Wejde, Johan, Brosjö, Otte, ...

The FUSgene at 16p11 fuses with DDIT3and ATF1 as the result of translocations with chromosome band 12q13 in myxoid liposarcoma and angiomatoid fibrous histiocytoma, respectively, and with ERG as the...

Molecular genetic characterization of the EWS/CHN and RBP56/CHN fusion genes in extraskeletal myxoid chondrosarcoma (2002)

Mertens, Fredrik, Isaksson, Margareth, Domanski, Henryk A, Brosjö, Otte, Heim, Sverre, ...

Extraskeletal myxoid chondrosarcoma (EMC) is a soft-tissue neoplasm cytogenetically characterized by the translocations t(9;22)(q22;q11-12) or t(9;17)(q22;q11), generating EWS/CHN or RBP56/CHN fusion...

Molecular genetic characterization of the EWS/ATF1 fusion gene in clear cell sarcoma of tendons and aponeuroses (2002)

Mertens, Fredrik, Isaksson, Margareth, Limon, Janusz, Kardas, Iwona, ...

Clear cell sarcoma (CCS) is a rare malignant soft tissue tumor particularly associated with tendons and aponeuroses. The cytogenetic hallmark is the translocation t(12;22)(q13;q12) resulting in a...

Differentially amplified chromosome 12 sequences in low- and high-grade osteosarcoma (2002)

Pålsson, Eva, Höglund, Mattias, Domanski, Henryk, Mertens, Fredrik, Pandis, Nikos, ...

Most osteosarcomas are highly aggressive malignancies characterized by a complex pattern of chromosome abnormalities. However, a subgroup of low-grade, parosteal tumors exhibits a relatively simple...

Correlation between clinicopathological features and karyotype in 100 cartilaginous and chordoid tumours. A report from the Chromosomes and Morphology (CHAMP) Collaborative Study Group (2002)

Dorfman, Howard, Brys, Peter, Fletcher, Christopher D M, ...

The evaluation of chondroid lesions requires full integration of clinical, radiographic, and pathological data; tumour typing is often a challenge for the diagnostic pathologist. Although a variety...

Karyotypic heterogeneity and clonal evolution in squamous cell carcinomas of the head and neck. (2002)

Jin, Charlotte, Jin, Yuesheng, Wennerberg, Johan, Akervall, Jan, Dictor, Michael, Mertens, Fredrik

Head and neck squamous cell carcinomas (HNSCC) are often characterized by complex karyotypic changes, and a substantial proportion of the reported tumors have shown intratumor heterogeneity in the...

Cytogenetic aberrations and their prognostic impact in chondrosarcoma. (2002)

Mandahl, Nils, Gustafson, Pelle, Mertens, Fredrik, Akerman, Måns, Baldetorp, Bo, Gisselsson, David, ...

Chondrosarcoma is the second most common primary malignancy of bone. Cytogenetic data are available from close to 100 cases, including all subtypes of chondrosarcoma. Specific chromosomal...

Differentially amplified chromosome 12 sequences in low- and high-grade osteosarcoma. (2002)

Gisselsson, David, Pålsson, Eva, Höglund, Mattias, Domanski, Henryk, Mertens, Fredrik, Pandis, Nikos, ...

Most osteosarcomas are highly aggressive malignancies characterized by a complex pattern of chromosome abnormalities. However, a subgroup of low-grade, parosteal tumors exhibits a relatively simple...

Chromosomal translocations involving 11q13 contribute to cyclin D1 overexpression in squamous cell carcinoma of the head and neck. (2002)

Akervall, Jan, Borg, Ake, Dictor, Michael, Jin, Charlotte, Jin, Yuesheng, Tanner, Minna, ...

CCND1 amplification results in cyclin D1 overexpression. However, other unidentified genetic mechanisms contribute to enhanced gene expression. In the present study, 32 squamous cell carcinoma of the...

Cyclin D1 amplification in chromosomal band 11q13 is associated with overrepresentation of 3q21-q29 in head and neck carcinomas. (2002)

Jin, Yuesheng, Jin, Charlotte, Wennerberg, Johan, Höglund, Mattias, Mertens, Fredrik

Eight cytogenetically characterized head and neck squamous cell carcinomas (HNSCCs) with CCND1 amplification in the form of a homogeneously staining region (hsr) in 11q13 were studied by COBRA FISH...

Molecular genetic characterization of the EWS/ATF1 fusion gene in clear cell sarcoma of tendons and aponeuroses. (2002)

Panagopoulos, Ioannis, Mertens, Fredrik, Dêbiec-Rychter, Maria, Isaksson, Margareth, Limon, Janusz, Kardas, Iwona, ...

Clear cell sarcoma (CCS) is a rare malignant soft tissue tumor particularly associated with tendons and aponeuroses. The cytogenetic hallmark is the translocation t(12;22)(q13;q12) resulting in a...

Fusion of RDC1 with HMGA2 in lipomas as the result of chromosome aberrations involving 2q35-37 and 12q13-15. (2002)

Broberg, Karin, Zhang, Miao, Strombeck, Bodil, Isaksson, Margareth, Nilsson, Malin, Mertens, Fredrik, ...

Rearrangements of chromosome bands 12q13-15 are frequent in various benign mesenchymal and epithelial tumors, and the gene HMGA2 seems to be the most common target within this chromosome region. In...

Prognostically important chromosomal aberrations in soft tissue sarcomas: a report of the Chromosomes and Morphology (CHAMP) Study Group. (2002)

Mertens, Fredrik, Strömberg, Ulf, Mandahl, Nils, Cin, Paola Dal, De Wever, Ivo, Fletcher, Christopher D M, ...

Cytogenetic analysis has not only provided important information on the pathogenesis of soft tissue tumors but, by disclosing distinct chromosomal rearrangements in different histopathological...

Molecular genetic characterization of the EWS/CHN and RBP56/CHN fusion genes in extraskeletal myxoid chondrosarcoma. (2002)

Panagopoulos, Ioannis, Mertens, Fredrik, Isaksson, Margareth, Domanski, Henryk A, Brosjö, Otte, Heim, Sverre, ...

Extraskeletal myxoid chondrosarcoma (EMC) is a soft-tissue neoplasm cytogenetically characterized by the translocations t(9;22)(q22;q11-12) or t(9;17)(q22;q11), generating EWS/CHN or RBP56/CHN fusion...

Chromosomal breakage-fusion-bridge events cause genetic intratumor heterogeneity

Gisselsson, David, Pettersson, Louise, Höglund, Mattias, Heidenblad, Markus, Gorunova, Ludmila, Wiegant, Joop, ...

It has long been known that rearrangements of chromosomes through breakage-fusion-bridge (BFB) cycles may cause variability of phenotypic and genetic traits within a cell population. Because...

Telomere dysfunction triggers extensive DNA fragmentation and evolution of complex chromosome abnormalities in human malignant tumors

Gisselsson, David, Jonson, Tord, Petersén, Åsa, Strömbeck, Bodil, Dal Cin, Paola, Höglund, Mattias, ...

Although mechanisms for chromosomal instability in tumors have been described in animal and in vitro models, little is known about these processes in man. To explore cytogenetic evolution in human...

Structural and numerical chromosome changes in colon cancer develop through telomere-mediated anaphase bridges, not through mitotic multipolarity

Stewénius, Ylva, Gorunova, Ludmila, Jonson, Tord, Larsson, Nina, Höglund, Mattias, Mandahl, Nils, ...

Telomere dysfunction has been associated with chromosomal instability in colorectal carcinoma, but the consequences of telomere-dependent instability for chromosome integrity and clonal evolution...

Fusion of the Tumor-Suppressor Gene CHEK2 and the Gene for the Regulatory Subunit B of Protein Phosphatase 2 PPP2R2A in Childhood Teratoma1

Jin, Yuesheng, Mertens, Fredrik, Kullendorff, Carl-Magnus, Panagopoulos, Ioannis

We characterized the molecular genetic consequences of a balanced chromosome translocation t(8;22)(p21;q12) which occurred as the sole cytogenetic aberration in short-term cultured cells from an...

Chromosomal breakage-fusion-bridge events cause genetic intratumor heterogeneity

Gisselsson, David, Pettersson, Louise, Höglund, Mattias, Heidenblad, Markus, Gorunova, Ludmila, Wiegant, Joop, ...

It has long been known that rearrangements of chromosomes through breakage-fusion-bridge (BFB) cycles may cause variability of phenotypic and genetic traits within a cell population. Because...

Telomere dysfunction triggers extensive DNA fragmentation and evolution of complex chromosome abnormalities in human malignant tumors

Gisselsson, David, Jonson, Tord, Petersén, Åsa, Strömbeck, Bodil, Dal Cin, Paola, Höglund, Mattias, ...

Although mechanisms for chromosomal instability in tumors have been described in animal and in vitro models, little is known about these processes in man. To explore cytogenetic evolution in human...

Structural and numerical chromosome changes in colon cancer develop through telomere-mediated anaphase bridges, not through mitotic multipolarity

Stewénius, Ylva, Gorunova, Ludmila, Jonson, Tord, Larsson, Nina, Höglund, Mattias, Mandahl, Nils, ...

Telomere dysfunction has been associated with chromosomal instability in colorectal carcinoma, but the consequences of telomere-dependent instability for chromosome integrity and clonal evolution...

Fusion of the Tumor-Suppressor Gene CHEK2 and the Gene for the Regulatory Subunit B of Protein Phosphatase 2 PPP2R2A in Childhood Teratoma1

Jin, Yuesheng, Mertens, Fredrik, Kullendorff, Carl-Magnus, Panagopoulos, Ioannis

We characterized the molecular genetic consequences of a balanced chromosome translocation t(8;22)(p21;q12) which occurred as the sole cytogenetic aberration in short-term cultured cells from an...

Activation of the GLI Oncogene through Fusion with the β-Actin Gene (ACTB) in a Group of Distinctive Pericytic Neoplasms: Pericytoma with t(7;12)

Dahlén, Anna, Fletcher, Christopher D. M., Mertens, Fredrik, Fletcher, Jonathan A., Perez-Atayde, Antonio R., Hicks, M. John, ...

Activation of the GLI oncogene is an important step in the sonic hedgehog signaling pathway, and leads to, eg, tissue-specific cell proliferation during embryogenesis. GLI activity in adult tissues...

Correlation between Clinicopathological Features and Karyotype in Spindle Cell Sarcomas : A Report of 130 Cases from the CHAMP Study Group

Fletcher, Christopher D. M., Dal Cin, Paola, De Wever, Ivo, Mandahl, Nils, Mertens, Fredrik, Mitelman, Felix, ...

Soft-tissue tumors have proved to be a fruitful area for the identification of reproducible cytogenetic aberrations, especially among pediatric round-cell sarcomas and lipomatous tumors. Thus far,...

Hibernomas are Characterized by Homozygous Deletions in the Multiple Endocrine Neoplasia Type I Region : Metaphase Fluorescence in Situ Hybridization Reveals Complex Rearrangements Not Detected by Conventional Cytogenetics

Gisselsson, David, Höglund, Mattias, Mertens, Fredrik, Dal Cin, Paola, Mandahl, Nils

Hibernomas are benign tumors of brown fat, frequently characterized by aberrations of chromosome band 11q13. In this study, the chromosome 11 changes in five hibernomas were analyzed in detail by...

Abnormal Nuclear Shape in Solid Tumors Reflects Mitotic Instability

Gisselsson, David, Björk, Jonas, Höglund, Mattias, Mertens, Fredrik, Dal Cin, Paola, Åkerman, Måns, ...

Abnormalities in nuclear morphology are frequently observed in malignant tissues but the mechanisms behind these phenomena are still poorly understood. In this study, the relation between abnormal...