1
|
Atas U, Turgut S, Ulas T, Iltar U, Salim O, Karauzum SB, Undar L. Does hand mirror morphology a useful diagnostic tool for the treatment decision of acute undifferentiated leukemia at admission? Clin Ter 2022; 173:297-298. [PMID: 35857043 DOI: 10.7417/ct.2022.2435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
It is difficult how to manage acute undifferentiated leukemia in daily practice, but generally, hand mirror morphology provides ease to treat these patients. Thirty-nine years old male patient was admitted to with the complaints of echymosis, and pain at his left buttock due to an intramuscular injection for the treatment of previously diagnosed of the lower respiratory infection. Peripheral blood smear revealed >%50 blasts cells with a moderate nuclear: cytoplasmic ratio and one or more nucleoli. The blast cells showed a hand-mirror morphology and not harboring auer rods. According to the flow cytometric analysis the blastic cells do not represent to be originated from myeloid or lymphoid origin, because the cells harboring both of two cell lineages. AML-like therapy was commenced based on the positive myeloid markers including CD117 and CD135. Even though hand mirror morphology of the blasts usually demonstrates the lymphoid origin and the patients are treated as ALL like therapy, myeloid blasts rarely represents the same morphology, as was in our patient.
Collapse
Affiliation(s)
- U Atas
- Akdeniz University School of Medicine, Department of Internal Medicine, Antalya/Turkey
| | - S Turgut
- Near East University School of Medicine, Department of Internal Medicine, Division of Hematology, Nicosia/Cyprus; k
| | - T Ulas
- Akdeniz University School of Medicine, Department of Internal Medicine, Division of Hematology, Antalya/Turkey
| | - U Iltar
- Akdeniz University School of Medicine, Department of Internal Medicine, Antalya/Turkey
| | - O Salim
- Akdeniz University School of Medicine, Department of Internal Medicine, Antalya/Turkey
| | - S B Karauzum
- Akdeniz University School of Medicine, Department of Medical Biology and Genetics, Antalya/Turkey
| | - L Undar
- Akdeniz University School of Medicine, Department of Internal Medicine, Antalya/Turkey
| |
Collapse
|
2
|
Arikan Y, Berker Karauzum S, Uysal H, Mihci E, Nur B, Duman O, Haspolat S, Altiok Clark O, Toylu A. Evaluation of exonic copy numbers of SMN1 and SMN2 genes in SMA. Gene X 2022; 823:146322. [PMID: 35219815 DOI: 10.1016/j.gene.2022.146322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/20/2021] [Accepted: 02/11/2022] [Indexed: 11/04/2022] Open
Abstract
SMA is a neuromuscular disease and occurs primarily through autosomal recessive inheritance. Identification of deletions in the SMN1 gene especially in the exon 7 and exon 8 regions (hot spot), are used in carrier testing. The exact copy numbers of those exons in the SMN1 and SMN2 genes in 113 patients who presented with a pre-diagnosis of SMA were determined using MLPA method. We aimed to reveal both the most common copy number profiles of different SMA types. It was found that the frequency of homozygous deletions in SMN1 was 15.9%, while heterozygous deletions was 16.9%. The most common SMN-MLPA profile was 0-0-3-3. In the cases with homozygous deletion, SMA type III diagnosis was observed most frequently (44%), and the rate of consanguineous marriage was found 33%. Two cases with the same exonic copy number profile but with different clinical subtypes were identified in a family. We also detected distinct exonic deletion and duplication MLPA profiles for the first time. We created "the SMA signature" that can be added to patient reports. Furthermore, our data are important for revealing potential local profiles of SMA and describing the disease in genetic reports in a way that is clear and comprehensive.
Collapse
Affiliation(s)
- Yunus Arikan
- Bozok University School of Medicine, Department of Medical Genetics, Yozgat, Turkey; Radboud University Medical Centre, Department of Human Genetics, Nijmegen, Netherland.
| | - Sibel Berker Karauzum
- Akdeniz University School of Medicine, Department of Medical Biology, Antalya, Turkey; Akdeniz University School of Medicine, Department of Medical Genetics, Antalya, Turkey.
| | - Hilmi Uysal
- Akdeniz University School of Medicine, Department of Neurology, Antalya, Turkey.
| | - Ercan Mihci
- Akdeniz University School of Medicine, Department of Medical Genetics, Antalya, Turkey; Akdeniz University School of Medicine, Department of Pediatry, Antalya, Turkey.
| | - Banu Nur
- Akdeniz University School of Medicine, Department of Medical Genetics, Antalya, Turkey; Akdeniz University School of Medicine, Department of Pediatry, Antalya, Turkey.
| | - Ozgur Duman
- Akdeniz University School of Medicine, Department of Neurology, Antalya, Turkey.
| | - Senay Haspolat
- Akdeniz University School of Medicine, Department of Pediatry, Antalya, Turkey.
| | - Ozden Altiok Clark
- Akdeniz University School of Medicine, Department of Medical Genetics, Antalya, Turkey.
| | - Asli Toylu
- Akdeniz University School of Medicine, Department of Medical Genetics, Antalya, Turkey.
| |
Collapse
|
3
|
Hangul C, Tokta O, Berker Karauzum S, Akkaya B, Yıldırım H, Tayfun Kupesiz F, Akınel AN. Analysis of DUX4 Expression in Bone Marrow and Re-Discussion of DUX4 Function in the Health and Disease. Turk Patoloji Derg 2022; 38:219-226. [PMID: 34854471 PMCID: PMC10508413 DOI: 10.5146/tjpath.2021.01564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/02/2021] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE DUX4 is an embryonic transcription factor (TF) later silenced in somatic tissues, while active in germline testis cells. Re-expression in somatic cells has been revealed to be present in pathologic conditions such as dystrophy, leukemia, and other cancer types. Embryonic cells, cancer cells and testis cells that show DUX4 expression are pluri-multipotent cells. This lead us to question "Could DUX4 be a TF that is active in certain types of potent somatic cells?" As a perfect reflection of the potent cell pool, we aimed to reveal DUX4 expression in the bone marrow. MATERIAL AND METHOD Bone marrow aspiration materials of seven healthy donors aged between 3 and 32 (2 males/5 females) were investigated with qPCR analysis after RNA isolation for the presence of DUX4 full length mRNA expression. Samples have been investigated for protein existence of DUX4 via immunohistochemistry in two donors that had sufficient aspiration material. RESULTS DUX4 mRNA expression was present in all donors, with higher expression compared to B-actin. DUX4 positive stained cells were also detected by immunohistochemistry. CONCLUSION With these results, novel expression for DUX4 in hematopoietic tissue is described. Further studies on the function of DUX4 in hematopoietic cells can shed light on DUX4-related pathways, and contribute to the treatment of DUX4-related diseases such as B-ALL, other cancers, and facioscapulohumeral muscular dystrophy.
Collapse
Affiliation(s)
- Ceren Hangul
- Department of Medical Biology and Genetics, Akdeniz University, Faculty of Medicine, Antalya, Turkey
| | - Oznur Tokta
- Department of Medical Biology and Genetics, Akdeniz University, Faculty of Medicine, Antalya, Turkey
| | - Sibel Berker Karauzum
- Department of Medical Biology and Genetics, Akdeniz University, Faculty of Medicine, Antalya, Turkey
| | - Bahar Akkaya
- Department of Pathology, Akdeniz University, Faculty of Medicine, Antalya, Turkey
| | - Hulya Yıldırım
- Department of Pathology, Akdeniz University, Faculty of Medicine, Antalya, Turkey
| | - Funda Tayfun Kupesiz
- Department of Pediatric Hematology and Oncology, Akdeniz University, Faculty of Medicine, Antalya, Turkey
| | - Ayse Nur Akınel
- Department of Pediatric Hematology and Oncology, Akdeniz University, Faculty of Medicine, Antalya, Turkey
| |
Collapse
|
4
|
Karaman Mercan T, Altiok Clark O, Erkal O, Nur B, Mihci E, Karaman B, Senol AU, Berker Karauzum S. Coexistence of a Homozygous Chromosome 4q35.2 Deletion and Hidden IQSEC2 Pathogenic Variant in a Child with Intellectual Disability. Cytogenet Genome Res 2021; 161:153-159. [PMID: 34229322 DOI: 10.1159/000515368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 02/22/2021] [Indexed: 11/19/2022] Open
Abstract
Terminal deletions in the long arm of chromosome 4 are an uncommon event, with a worldwide incidence of approximately 0.001%. The majority of these deletions occur de novo. Terminal deletion cases are usually accompanied by clinical findings that include facial and cardiac anomalies, as well as intellectual disability. In this study, we describe the case of a 2-year-old girl, the fourth child born to consanguineous parents. While her karyotype was normal, a homozygous deletion was identified in the chromosome 4q35.2 region by subtelomeric FISH. A heterozygous deletion of the chromosome 4q35.2 region was observed in both parents. According to the literature, this is the first report of a case that has inherited a homozygous deletion of chromosome 4qter from carrier parents. Subsequent array-CGH analyses were performed on both the case and her parents. Whole-exome sequencing was also carried out to determine potential variants. We detected a NM_001111125.3:c.2329G>T (p.Glu777Ter) nonsense variant of the IQSEC2 gene in the girl, a variant that is related to X-linked intellectual disability.
Collapse
Affiliation(s)
- Tuğba Karaman Mercan
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Ozden Altiok Clark
- Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Ozgur Erkal
- Department of Medical Genetics, Antalya Training and Research Hospital, Antalya, Turkey
| | - Banu Nur
- Department of Pediatric Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Ercan Mihci
- Department of Pediatric Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Birsen Karaman
- Department of Medical Genetics, Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Abdullah Utku Senol
- Department of Radiodiagnostics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Sibel Berker Karauzum
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| |
Collapse
|
5
|
Aydin C, Ulas T, Hangul C, Yucel OK, Iltar U, Salim O, Ekinci D, Berker Karauzum S. Conventional Cytogenetics and Interphase Fluorescence In Situ Hybridization Results in Multiple Myeloma: A Turkey Laboratory Analysis of 381 Cases. Indian J Hematol Blood Transfus 2020; 36:284-291. [PMID: 32425379 PMCID: PMC7229081 DOI: 10.1007/s12288-019-01215-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 10/12/2019] [Indexed: 12/16/2022] Open
Abstract
Multiple myeloma (MM) is an uncontrolled proliferation of plasma cells and these cells play an important role in the immune system. In this research, we retrospectively analyzed cytogenetic abnormalities in 381 patients with MM. Conventional cytogenetic analysis was successful in 354 patients (92.9%). Chromosomal abnormalities were detected in 31.9% (113/354) and 45.8% (116/253) of patients screened with conventional cytogenetics and FISH, respectively. Of 113 patients with chromosomal abnormalities, 31 patients (27.4%) had hyperdiploid and 26 of 31 patients with hyperdiploidy had both numerical and structural anomalies. On the other hand, non-hyperdiploidy was observed in 62 patients (54.8%). The most common gains of chromosomes were 15, 9, 19 followed by 3, 5, 11, and 21. Whole chromosome losses were also frequent involving Y, 13 and 22 chromosomes. In our patients, 1q gain was determined in a total of 25 patients (22%), including 7 structural abnormalities and 19 unbalanced translocations causing complete or partial duplication of the long arm of chromosome 1. Although the breakpoints were different, t(1;5) balanced translocation and unbalanced translocations of t(1;2), t(1;3), t(1;7), t(1;16) and t(1;19) were observed twice. The most common structural abnormality was the deletion of the short arm of chromosome 13 (13q) or monosomy of chromosome 13 (-13) (24.1%, 61/253) in patients evaluated by FISH. Deletion involving chromosome 17p (del 17p) or monosomy of chromosome 17 (-17) were found in 31 (12.3%) patients. Translocations involving IgH regions were as follows: t(11;14)(q13;q32.33) in 22 (8.7%), t(4;14)(p16.3;q32.33) in 22 (8.7%) and t(14;16)(q32.33;q23.1) in 2 (0.8%) patients. In addition, t(14;17)(q32;q21) translocation was detected in a multiple myeloma patient for the first time in this study. There are a limited number of large study groups including both cytogenetic and FISH findings in MM patients. As the number of these studies increases, it is thought that new cytogenetic data can be guiding especially in clinical risk determination.
Collapse
Affiliation(s)
- Cigdem Aydin
- Bucak School of Health, Mehmet Akif Ersoy University, Burdur, Turkey
| | - Turgay Ulas
- Department of Hematology, Faculty of Medicine, Near East University, Nicosia, Cyprus
| | - Ceren Hangul
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Orhan Kemal Yucel
- Department of Hematology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Utku Iltar
- Department of Hematology, Antalya Training and Research Hospital, University of Health Sciences, Antalya, Turkey
| | - Ozan Salim
- Department of Hematology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Deniz Ekinci
- Department of Hematology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Sibel Berker Karauzum
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| |
Collapse
|
6
|
Darbas Ş, Aydın Ç, Salim O, Berker Karauzum S. Investigation Of Mdm2 Oncogene Copy Number Alterations in Cases With Chronic Lymphocytic Leukemia. Turk J Haematol 2018. [DOI: 10.4274/tjh.2018.0270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
|
7
|
Nur BG, Clark OA, Cetin Z, Toylu A, Karauzum SB, Mihci E. The clinical spectrum of a rare chromosomal abnormality: Isochromosome 18p. Genet Couns 2016; 27:223-231. [PMID: 29485826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Isochromosome 18p is a rare chromosomal disorder that occurs with a frequency of approximately one in every 180,000 live births, and affects both genders equally. MOst cases result from a de novo formation. In the literature, there are currently only a small number of reports that describe the phenotypic and clinical features of Isochromosome 18p. In this article, we report six cases that displayed the phenotypic and clinical features of Isochromosome 18p, and which were subsequently confirmed by conventional karyotyping and fluorescence in situ hybridization. We also discuss the clinical features of these patients in the context of the cases previously reported in the literature.
Collapse
|
8
|
Cetin Z, Sanhal C, Karauzum SB, Mendilcioglu I, Yakut S. Ultrasonographic and Cytogenetic Issues in Prenatal Diagnosis of Pallister Killian Syndrome. Genet Couns 2016; 27:233-237. [PMID: 29485827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
|
9
|
Aydin C, Cetin Z, Manguoglu AE, Tayfun F, Clark OA, Kupesiz A, Akkaya B, Karauzum SB. Evaluation of ETV6/RUNX1 Fusion and Additional Abnormalities Involving ETV6 and/or RUNX1 Genes Using FISH Technique in Patients with Childhood Acute Lymphoblastic Leukemia. Indian J Hematol Blood Transfus 2015; 32:154-61. [PMID: 27065576 DOI: 10.1007/s12288-015-0557-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Accepted: 05/25/2015] [Indexed: 01/18/2023] Open
Abstract
Childhood acute lymphoblastic leukemia (ALL) is the most common type of childhood leukemia. Specifically, ALL is a malignant disorder of the lymphoid progenitor cells, with a peak incidence among children aged 2-5 years. The t(12;21)(p13;q22) translocation occurs in 25 % of childhood B cell precursor ALL. In this study, bone marrow samples were obtained from 165 patients with childhood ALL. We analyzed the t(12;21) translocation and other related abnormalities using the fluorescent in situ hybridization (FISH) technique with the ETV6(TEL)/RUNX1(AML1) ES dual color translocation probe. Conventional cytogenetic analyses were also performed. ETV6 and RUNX1 related chromosomal abnormalities were found in 42 (25.5 %) of the 165 patients with childhood ALL. Among these 42 patients, structural changes were detected in 33 (78.6 %) and numerical abnormalities in 9 (21.4 %). The frequency of FISH abnormalities in pediatric ALL cases were as follows: 8.5 % for t(12;21)(p13;q22) ETV6/RUNX1 fusion, 6.0 % for RUNX1 amplification, 3.0 % for tetrasomy/trisomy 21, 1.8 % for ETV6 deletion, 1.21 % for ETV6 deletion with RUNX1 amplification, 1.21 % for ETV6 amplification with RUNX1 amplification, 0.6 % for polyploidy, 0.6 % for RUNX1 deletion, and 0.6 % for diminished ETV6 signal. The most common structural abnormality was the t(12;21) translocation, followed by RUNX1 amplification and ETV6 deletion, while the most commonly observed numerical abnormality was trisomy 21.
Collapse
Affiliation(s)
- Cigdem Aydin
- Department of Nursing, Bucak School of Health, Mehmet Akif Ersoy University, Burdur, Turkey
| | - Zafer Cetin
- Department of Medical Biology, Faculty of Medicine, Sanko University, Gaziantep, Turkey
| | - Ayse Esra Manguoglu
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Funda Tayfun
- Department of Pediatric Hematology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Ozden Altiok Clark
- Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Alphan Kupesiz
- Department of Pediatric Hematology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Bahar Akkaya
- Department of Pathology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Sibel Berker Karauzum
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| |
Collapse
|
10
|
Aydin C, Salim O, Yucel OK, Undar L, Karauzum SB. inv (4)(p13q13) in patient with essential thrombocythemia: A case report. Hematol Oncol Stem Cell Ther 2015; 8:181-4. [PMID: 25953232 DOI: 10.1016/j.hemonc.2015.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 04/03/2015] [Accepted: 04/11/2015] [Indexed: 10/23/2022] Open
Abstract
The inv (4)(p13q13) cytogenetic abnormality is uncommon in hematologic malignancies. So far, it has not been previously reported in patients with essential thrombocythemia (ET). We report a first case of ET with inv (4)(p13q13) karyotype in a 69-year-old female patient who developed myelofibrosis at follow up. Conventional cytogenetic analysis from a bone marrow sample showed 46, XX, inv (4)(p13q13) [3]/46, XX [4] at diagnosis and subsequent analysis revealed the same abnormal karyotype during the myelofibrosis phase (46, XX, inv (4)(p13q13) [13]/46, XX [26]). The prognostic significance of this chromosomal abnormality is unknown.
Collapse
Affiliation(s)
- Cigdem Aydin
- Mehmet Akif Ersoy University, Bucak School of Health, Department of Nursing, Burdur, Turkey
| | - Ozan Salim
- Akdeniz University, Faculty of Medicine, Department of Hematology, Antalya, Turkey
| | - Orhan Kemal Yucel
- Akdeniz University, Faculty of Medicine, Department of Hematology, Antalya, Turkey
| | - Levent Undar
- Akdeniz University, Faculty of Medicine, Department of Hematology, Antalya, Turkey
| | - Sibel Berker Karauzum
- Akdeniz University, Faculty of Medicine, Department of Medical Biology and Genetics, Antalya, Turkey.
| |
Collapse
|
11
|
Yakut S, Clarck OA, Sanhal C, Nur BG, Mendilcioglu I, Karauzum SB, Cetin Z. A familial interstitial 4q35 deletion with no discernible clinical effects. Am J Med Genet A 2015; 167A:1836-41. [PMID: 25846895 DOI: 10.1002/ajmg.a.37097] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 03/16/2015] [Indexed: 01/08/2023]
Abstract
Small deletions on the long arm of distal chromosome 4 do not appear to result in gross congenital malformations, with the most frequently reported clinical findings including mild to moderate intellectual disability, learning disabilities and minor dysmorphic features. Here we report on a cytogenetically detectable familial interstitial chromosome 4 long arm deletion with no discernible phenotypic effects in a mother and her two daughters. The karyotypes of the mother and her two daughters were: 46,XX,del(4)(q35.1q35.2). Based on the results of FISH analyses using whole chromosome specific and subtelomeric probes, the karyotype was designated as: 46,XX,del(4)(q35.1q35.2). ish del(4)(q35-qter)(WCP4+, 36P21+, dJ963K6-). Array-CGH analysis showed an interstitial deletion encompassing 5.75 Mb in the 4q35.1-q35.2 genomic region (chr4:184,717,878-190,469,337; hg19). This is the first report on a cytogenetically detectable familial interstitial chromosome 4 long arm deletion in which there are no discernible phenotypic effects. Both our findings and a review of the literature suggest that more detailed molecular analyses are needed in cases with distal chromosome 4 long arm deletions especially those with breakpoints in the 4q35 region to establish a more precise genotype-phenotype correlation.
Collapse
Affiliation(s)
- Sezin Yakut
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Ozden Altiok Clarck
- Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Cem Sanhal
- Department of Obstetrics and Gynaecology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Banu Guzel Nur
- Department of Pediatric Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Inanc Mendilcioglu
- Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Sibel Berker Karauzum
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Zafer Cetin
- Department of Medical Biology, Faculty of Medicine, Sanko University, Gaziantep, Turkey
| |
Collapse
|
12
|
Nur BG, Cetin Z, Clark OA, Mihci E, Oygur N, Karauzum SB. 22q11.2 syndrome due to maternal translocation t(18;22) (pl1.2;q11.2). Genet Couns 2015; 26:67-75. [PMID: 26043510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
22q11.2 deletion syndrome is a pattern of malformations resulting from abnormalities during cephalic neural crest migration and during the development of the third and fourth branchial arch. It is also known as DiGeorge syndrome, as it is most often associated with a de novo 3 Mb hemizygous 22q11.2 deletion. The recognition of similarities and phenotypic overlap between DiGeorge syndrome and other disorders associated with genetic defects in 22q11 has led to an expanded description of the phenotypic features of this syndrome. Indeed, the extent of this phenotypic variability can often make it difficult to accurately diagnose DiGeorge syndrome. Tertiary monosomy resulting from the 3:1 segregation of the respective chromosomal segments of the chromosomes involved in a balanced translocation in meiosis is rarely reported in the literature. In this report, we present a female infant with dysmorphic facial features, microcephaly, a cleft palate, unilateral membranous choanal atresia, convulsions, hypocalcemia, semilobar holoporencephaly and echocardiographic abnormalities. To the best of our knowledge, this is the first description of a newborn displaying both DiGeorge syndrome and deletion 18p syndromes.
Collapse
MESH Headings
- Chromosome Deletion
- Chromosome Disorders/genetics
- Chromosome Disorders/pathology
- Chromosome Disorders/physiopathology
- Chromosomes, Human, Pair 18/genetics
- DiGeorge Syndrome/genetics
- DiGeorge Syndrome/pathology
- DiGeorge Syndrome/physiopathology
- Female
- Humans
- Infant
- Infant, Newborn
- Infant, Newborn, Diseases/genetics
- Infant, Newborn, Diseases/pathology
- Infant, Newborn, Diseases/physiopathology
- Translocation, Genetic/genetics
Collapse
|
13
|
Yakut S, Cetin Z, Sanhal C, Karaman B, Mendilcioglu I, Karauzum SB. PRENATAL DIAGNOSIS OF DE NOVO PERICENTRIC INVERSION INV(2)(p11.2z13). Genet Couns 2015; 26:243-247. [PMID: 26349196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We here report a prenatal case with de novo pericentric inversion inv(2)(p11.2q13). A 20-years-old G1PO woman was referred for amniocentesis at 17 weeks of gestation, because of a positive second trimester screening test for aneuploidy. A de novo pericentric inversion inv(2)(p11.2q13) was detected during conventional cytogenetic analysis. Array-CGH analysis of the fetus showed no subtle chromosomal imbalances at the breakpoints. Genetic counseling was given to the family and the family decided to continue the pregnancy. To our knowledge, our case is the third prenatally detected de novo case with inv(2)(p11.2q13), and also the first case in which molecular karyotyping analysis were also applied.
Collapse
|
14
|
Yakut S, Cetin Z, Sanhal C, Karauzum SB, Karaman B, Simsek M. PRENATAL DIAGNOSIS OF DE NOVO SUPERNUMERARY MARKER CHROMOSOME ORIGINATED FROM CHROMOSOME 16 BY ARRAY-CGH. Genet Couns 2015; 26:299-305. [PMID: 26625660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A 33 years-old pregnant woman was referred for amniocentesis at 19 weeks of gestation due to abnormal serum biochemistry. A non-satellited, monocentric marker chromosome was observed with a frequency of 50% in cultured amniocytes. Parental karyotypes were normal. The marker chromosome was found to be derived from chromosome 16 by FISH and array-CGH analysis. Genetic counseling was given to parents and the family decided to terminate the pregnancy. Dysmorphic findings including; low set ears, exophtalmos depressed nasal bridge, large mouth and lips, posture anomalies at the extremities were detected at autopsy.
Collapse
|
15
|
Karasu GT, Yesilipek MA, Karauzum SB, Uygun V, Manguoglu E, Kupesiz A, Hazar V. The value of donor lymphocyte infusions in thalassemia patients at imminent risk of graft rejection following stem cell transplantation. Pediatr Blood Cancer 2012; 58:453-8. [PMID: 21990066 DOI: 10.1002/pbc.23350] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Accepted: 08/23/2011] [Indexed: 11/10/2022]
Abstract
BACKGROUND The aim was to evaluate the feasibility of donor lymphocyte infusion (DLI) in transplanted patients with thalassemia who were at imminent risk of graft rejection (GR). PROCEDURE We retrospectively evaluated outcomes in a cohort of 19 patients with thalassemia who received DLI following 21 transplantations. Patients were divided into three groups depending on indication and time of DLI: group I, mixed chimerism-level-3 (MC-level-3) within 2 months and subsequently receiving DLI; group II, MC-level-3 within 2 months and receiving deferred DLI beyond post-transplant 2.5 months; group III, receiving DLI because of a gradual decrease in both donor cells and hemoglobin levels without MC-level-3 within 2 months. RESULTS Three patients evolved to compete chimerism (16%), 9 patients had MC with transfusion independency (47%) and 7 had GR (37%). Three of 7 patients in group I, 1 of 4 patients in group II and 8 of 10 patients in group III preserved the graft. Although significant increases in the percentage of donor cells were not detected in group III, hemoglobin levels improved (median, 6.8-8.8 g/dl, P = 0.002). CONCLUSION The risk of GR is high in patients with thalassemia who have MC-level-3 within 2 months after transplantation. DLI is a feasible method for converting unstable MC towards stable MC or full donor chimerism, but its efficacy is partially related to the percentage of residual host cells at the time of infusion. Serial chimerism studies can identify unstable MC earlier and may guide the proper timing of intervention.
Collapse
Affiliation(s)
- Gulsun Tezcan Karasu
- Department of Pediatric Hematology and Oncology, Akdeniz University School of Medicine, Antalya, Turkey
| | | | | | | | | | | | | |
Collapse
|
16
|
Cetin Z, Mihci E, Yakut S, Keser I, Karauzum SB, Luleci G. Pure and complete 12p trisomy due to a maternal centric fission of chromosome 12. Am J Med Genet A 2011; 155A:349-52. [DOI: 10.1002/ajmg.a.33811] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Accepted: 09/23/2010] [Indexed: 11/08/2022]
|
17
|
Bagci G, Bisgin A, Karauzum SB, Trak B, Luleci G. Complete gonadal dysgenesis 46,XY (Swyer syndrome) in two sisters and their mother's maternal aunt with a female phenotype. Fertil Steril 2010; 95:1786.e1-3. [PMID: 21145048 DOI: 10.1016/j.fertnstert.2010.11.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 11/06/2010] [Accepted: 11/15/2010] [Indexed: 10/18/2022]
Abstract
OBJECTIVE To present a familial case of Swyer syndrome. DESIGN Case report. SETTING Academic medical center. PATIENT(S) Two sisters with a main complaint of primary amenorrhea and another case, their mother's maternal aunt with the same history of primary amenorrhea but married with no consanguinity and no children. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) The patients were studied from clinical, endocrinologic, and genetic perspectives. RESULT(S) Chromosome analyses revealed a 46,XY male karyotype with no detectable mosaicism in both sisters and their mother's maternal aunt. Molecular studies of sex-determining region Y and molecular investigation undertaken for the two sisters revealed SRY negativity. CONCLUSION(S) Gonadal dysgenesis can also be inherited as an X-linked disorder, and evidence exists from familial studies of perhaps autosomal inheritance.
Collapse
Affiliation(s)
- Gulseren Bagci
- Department of Medical Biology, Pamukkale University Faculty of Medicine, Denizli, Turkey
| | | | | | | | | |
Collapse
|
18
|
Cetin Z, Ozbilim G, Erdogan A, Luleci G, Karauzum SB. Evaluation of PTEN and Mcl-1 expressions in NSCLC expressing wild-type or mutated EGFR. Med Oncol 2009; 27:853-60. [PMID: 19763916 DOI: 10.1007/s12032-009-9296-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Accepted: 08/18/2009] [Indexed: 12/18/2022]
Abstract
Signaling pathways activated by epidermal growth factor receptors (EGFRs) are important in lung carcinogenesis. New treatment strategies with EGFR-targeting drugs provided improvements in management of lung cancer. However, molecular mechanisms underlying resistance to these drugs need to be evaluated. Surgically resected samples were obtained from 50 patients with non-small-cell-lung cancer. PTEN, Mcl-1 and EGFR protein expression levels were evaluated by Western-blot. Direct sequencing was performed to investigate EGFR tyrosine kinase domain mutations. We detected c.2235-2249 (pGlu746-Ala750del) mutation in exon 19 in two patients with adenocarcinoma histology. Elevated expression levels of both Mcl-1 isoforms (Mcl-1S and Mcl-1XL) and EGFR proteins were found in 15 (30%) and 23 (46%) of the cases, respectively. Reduced PTEN protein expression levels were observed in 17 (34%) of the cases. PTEN expression level was reduced in 26% of cases that showed increased EGFR expression. Also, increased expression of Mcl-1 protein was observed in 26% of cases with EGFR overexpression. One of the cases harboring pGlu746-Ala750del mutation had increased levels of Mcl-1 and decreased PTEN expression levels. Our results indicate that, in addition to lack of PTEN expression, elevated levels of the Mcl-1 protein might be one of the important intrinsic mechanisms protecting non-small-cell-lung cancer cells from apoptosis induced by several compounds. Therefore, EGFR mutations in conjunction with evaluation of Mcl-1 and PTEN expression levels in large cohorts might provide important clues for improvements of new treatment strategies in non-small-cell-lung cancer management.
Collapse
Affiliation(s)
- Zafer Cetin
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | | | | | | | | |
Collapse
|
19
|
Firat SC, Cetin Z, Samanci N, Aydin F, Balci N, Bilgen T, Gungor F, Firat MZ, Luleci G, Karauzum SB. No Association Between Bone Mineral Density and Transforming Growth Factor Beta Gene T 861-20-C Polymorphism in Turkish Postmenopausal Women. Genet Test Mol Biomarkers 2009; 13:349-53. [DOI: 10.1089/gtmb.2008.0134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Sibel Cubukçu Firat
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Zafer Cetin
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Nehir Samanci
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Funda Aydin
- Nuclear Medicine, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Nilufer Balci
- Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Turker Bilgen
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Firat Gungor
- Nuclear Medicine, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Mehmet Ziya Firat
- Biometry and Genetics Unit, Faculty of Agriculture, Akdeniz University, Antalya, Turkey
| | - Guven Luleci
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Sibel Berker Karauzum
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| |
Collapse
|
20
|
Abstract
Hairy cell leukemia (HCL) is a chronic B-cell lymphoproliferative disorder with pathological manifestations usually including splenomegaly and pancytopenia. Interferons (IFNs), specifically of the alpha subtypes, have shown a significant anti-tumor effect in HCL patients, with improvement of hematological parameters within the first few months of treatment. However, the therapeutic effect of IFN-alpha is still rather limited. The mechanisms responsible for the beneficial action of IFN-alpha in HCL patients are unclear. A continuous line of cells (Eskol) from a patient diagnosed with HCL was established and shown to have several properties of HCL. Even though, Eskol cells are very resistant to anti-proliferative activity of IFN-alpha, Daudi cells, another human B-cell-derived cell line, are very sensitive to anti-proliferative activity of IFN-alpha and are commonly used as a model cell to test anti-proliferative effect of IFN-alpha. To understand the molecular reason(s) behind the observed obvious differences to IFN sensitivity of above cells, we have analyzed the expression levels of BCL2, caspase-1, Laminin and PARP in these cells. We found that Daudi cells do not express BCL2 at all, and probably because of that, these cells have constantly cleaved, and probably activated form of caspase-1. However, when we over-expressed BCL2 in these cells, they lost processed form of caspase-1 and became resistant to anti-proliferative activity of IFN-alpha. These results let us to suggest that IFN-alpha sensitivity of B-cell lymphomas, once again, depends on the presence or absence of BCL2.
Collapse
|
21
|
Cetin Z, Tezcan G, Karauzum SB, Kupesiz A, Manguoglu AE, Yesilipek A, Luleci G, Hazar V. Donor cell-derived acute myeloblastic leukemia after allogeneic peripheral blood hematopoietic stem cell transplantation for juvenile myelomonocytic leukemia. J Pediatr Hematol Oncol 2006; 28:763-7. [PMID: 17114967 DOI: 10.1097/01.mph.0000243660.48808.72] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Despite its rarity, donor cell leukemia (DCL) is a most intriguing entity. We report here the case of a 5 year-old girl with juvenile myelomonocytic leukemia and normal female karyotype who developed acute myeloblastic leukemia with a karyotype of 46, X, t(X; 7) (p21; p11.2), der(7) t(3; 7) (q13.3; q22) 5 months after peripheral blood hematopoietic stem cell transplantation from her HLA-matched sister. We performed the analysis of short tandem repeat sequence markers to DNA obtained from donor peripheral blood, patient's peripheral blood including leukemic blasts and patient's hair root. This analysis showed that the leukemic blood DNA matched the donor blood DNA and not the patient's DNA, thus confirming DCL. To our knowledge, this is the first case of DCL after peripheral blood SCT for juvenile myelomonocytic leukemia.
Collapse
MESH Headings
- Blood Donors
- Child, Preschool
- Chromosome Aberrations
- Fatal Outcome
- Female
- Humans
- Leukemia, Myeloid, Acute/etiology
- Leukemia, Myelomonocytic, Chronic/complications
- Leukemia, Myelomonocytic, Chronic/genetics
- Leukemia, Myelomonocytic, Chronic/therapy
- Neoplasms, Second Primary
- Peripheral Blood Stem Cell Transplantation/adverse effects
- Transplantation Chimera/genetics
- Transplantation, Homologous
Collapse
Affiliation(s)
- Zafer Cetin
- Department of Pediatrics, Akdeniz University, Antalya, Turkey
| | | | | | | | | | | | | | | |
Collapse
|
22
|
Karauzum SB, Bilgen T, Karadogan I, Yakut S, Cetin Z, Ugur A, Luleci G. Novel cytogenetic findings revealed by conventional cytogenetic and FISH analyses in leukaemia patients. Exp Oncol 2005; 27:229-32. [PMID: 16244587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
AIM To describe novel cytogenetic findings in four leukaemia patients. METHODS Conventional cytogenetic (CC) and fluorescence in situ hybridization (FISH) analyses were performed on bone marrow samples of four leukaemia patients. RESULTS In this study, t(3;10)(q11;q25) and t(2;22)(p21;q11.2) were detected as novel translocations. t(8;16;21)(q22.1;q13;q22) and t(1;6;9;22)(p36.1;p21.3;q34;q11) were found as variant translocations, and these variant translocations were confirmed by Interphase-FISH and Multi-colour-FISH. CONCLUSION Newly identified cytogenetic findings can lead us to characterize cytogenetic evolution of the haematological malignancies. Further investigations are certainly warranted to resolve the prognostic impact of these new cytogenetic abnormalities.
Collapse
Affiliation(s)
- S B Karauzum
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya, Turkey.
| | | | | | | | | | | | | |
Collapse
|
23
|
Sahin M, Karauzum SB, Perry G, Smith MA, Aliciguzel Y. Retinoic acid isomers protect hippocampal neurons from amyloid-beta induced neurodegeneration. Neurotox Res 2005; 7:243-50. [PMID: 15897158 DOI: 10.1007/bf03036453] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Attenuating amyloid-beta mediated neurodegeneration is of major therapeutic consideration in the potential treatment of Alzheimer disease. Previously, we found that a high dietary consumption of retinoic acid was associated with a reduced incidence of Alzheimer disease. Therefore, in this study, we investigated whether amyloid-beta mediated cell death in primary hippocampal neurons could be prevented by retinoic acid isomers. Our results suggest that retinoic acid isomers, including all-trans retinoic acid, 9-cis retinoic acid, and 13-cis retinoic acid, may play an important role in protecting neurons from amyloid-beta -induced cell death. Retinoic acid may therefore afford a novel therapeutic mechanism for the treatment and prevention of Alzheimer disease.
Collapse
Affiliation(s)
- M Sahin
- Akdeniz University, Faculty of Medicine, Department of Biochemistry and Department of Medical Biology and Genetics, Antalya- Turkey
| | | | | | | | | |
Collapse
|
24
|
Caliskan MO, Karauzum SB, Mihci E, Tacoy S, Luleci G. Subtelomeric chromosomal rearrangements detected in patients with idiopathic mental retardation and dysmorphic features. Genet Couns 2005; 16:129-38. [PMID: 16080292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Subtelomeric chromosomal rearrangements detected in patients with idiopathic mental retardation and dysmorphic features: Cryptic aberrations involving the subtelomeric regions of chromosomes are thought to be responsible for idiopathic mental retardation (MR) and multiple congenital anomalies, although the exact incidence of these aberrations is still unclear. With the advent of chromosome-specific telomeric Fluorescence In Situ Hybridization (FISH) probes, it is now possible to identify submicroscopic rearrangements of distal ends of the chromosomes that can not be detected by conventional cytogenetic methods. In this study, cryptic subtelomeric chromosomal aberrations were detected in two of ten patients with idiopathic MR and dysmorphic features by using FISH probes of subtelomeric regions of all chromosome arms. A cryptic unbalanced de novo translocation was detected between the subtelomeric regions of the chromosome 10p and 18p in a patient with severe mental retardation, sensorineuronal deafness and several dysmorphic features. In the other patient, with mild mental retardation and dysmorphic features, a de novo subtelomeric deletion of chromosome 2q was found. In conclusion, in both familial and sporadic cases with idiopathic MR and dysmorphic features, the detection of chromosomal aberrations including subtelomeric rearrangements is of great importance in offering genetic counseling and prenatal diagnosis.
Collapse
MESH Headings
- Abnormalities, Multiple/diagnosis
- Abnormalities, Multiple/genetics
- Child
- Child, Preschool
- Chromosome Aberrations
- Chromosome Banding
- Chromosome Deletion
- Chromosomes, Human, Pair 10/genetics
- Chromosomes, Human, Pair 18/genetics
- Chromosomes, Human, Pair 2
- Craniofacial Abnormalities/diagnosis
- Craniofacial Abnormalities/genetics
- Deafness/genetics
- Dermoscopy
- Female
- Gene Rearrangement/genetics
- Genotype
- Humans
- Image Processing, Computer-Assisted
- In Situ Hybridization, Fluorescence
- Infant
- Intellectual Disability/genetics
- Karyotyping
- Male
- Middle Aged
- Telomere/genetics
- Translocation, Genetic/genetics
Collapse
Affiliation(s)
- M O Caliskan
- Department of Medical Biology and Genetics, Akdeniz University, Faculty of Medicine, Antalya, Turkey
| | | | | | | | | |
Collapse
|