A Benider

Centre Hospitalier Universitaire IBN Rochd, Anfa, Grand Casablanca, Morocco

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Publications (160)89.88 Total impact

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    ABSTRACT: Germline mutations in the BRCA1 gene are known predictive markers for the development of hereditary breast cancer. Nevertheless, no comprehensive study has been performed targeting the presence and relevance of BRCA1 mutations in Moroccan breast cancer patients. We here present an analysis of BRCA1 gene regions (exon 2 and exon 11a/b) of 50 female Moroccan breast cancer patients with early disease onset (≤40 years) or familial disease backgrounds. Results showed that no mutation was present in either exon 2 or exon 11a of the BRCA1 gene in any of the 50 patients analysed. However, in exon 11b, a mutation generated by a nucleotide exchange was detected in 8% of patients, most of whom were young women (≤40). This mutation leads to substitution of the amino acid glutamine by an arginine at position 356 of the polypeptide sequence (Q356R). Although this mutation was previously characterised at a lower frequency in western populations, our study is the first to describe it in a young Moroccan population. Furthermore, another mutation was detected with a high frequency (4%) on exon 11b of the BRCA1 gene in exclusively young patients (≤40). This mutation was silent, encoding the same threonine residue at position 327 (T327T) as the wild type. The present study is the first to describe this mutation as well, particularly in a young Moroccan population. Analysis of a larger population is required in order to highlight the relevance of the Q356R and T327T mutations in young Moroccan breast cancer patients.
    Genetics and molecular research: GMR 01/2014; 13(1):791-8. · 0.99 Impact Factor
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    ABSTRACT: We report a case of adrenal metastasis from colorectal cancer in a 54-year-old woman. Nine months after resection for advanced rectal carcinoma, a computed tomography scan revealed bilateral adrenal metastasis. The level of serum carcinoembryonic antigen was normal. A bilateral adrenalectomy was performed after chemotherapy. Histopathological examination showed adenocarcinoma, compatible with metastasis from the rectal cancer. Adrenal metastasis should be considered in the patients' follow-up for colorectal cancer.
    Case reports in gastrointestinal medicine. 01/2014; 2014:516403.
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    ABSTRACT: Granular cell tumour, or Abrikossoff's tumour, is a rare, ubiquitous tumour, with mostly benign evolution. The malignant forms represent 1-3% of the cases. The vulvar localization is exceptional. We report the case of a 28-year-old patient who presented a vulvar Abrikossoff's tumour. Initially considered benign, the tumour was treated by exclusive local surgery. Five months later, the tumour showed a malignant transformation. The tumour size was 14cm in its major axis with the presence of not systematized scattered mitoses, PS 100 was positive at 100% and Ki 67 to 20%. Because of malignant and economic excision of the neoplasm, the patient received adjuvant radiotherapy. After 20 months, the patient had a local recurrence and lung metastasis, supporting the diagnosis of malignancy. She received two chemotherapy regimens of 5-fluoro-uracil/cisplatin and pacliatxel/carboplatin without any response. Following the failure of chemotherapy, the patient received symptomatic medical treatment. This observation leads to advocate an aggressive surgical treatment and strict supervision of all granular cell tumours.
    Cancer/Radiothérapie 10/2013; · 1.48 Impact Factor
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    ABSTRACT: Nasopharyngeal carcinoma (NPC) is a malignant epithelial tumor intimately associated with Epstein-Barr virus (EBV). NPC is a characteristic tumor displaying epidemiological, genetic and regional distribution properties that makes it unique by its natural behavior. To assess the expression pattern of LMP1 and p53 proteins in the different histological types of NPC in a sample of the Moroccan population and to define any association between the expression of those proteins with the sex, the age and the histological types of NPC. Archival formalin-fixed, paraffin-embedded NPC biopsies were evaluated in 23 Moroccan patients for the presence of LMP1 and p53 using immunohistochemistry (IHC). No LMP1 expression was observed whereas 8 of 23 cases (34. 7%) had detectable p53 protein in the nuclei of tumor cells. After statistical analysis according to the Fisher's exact probability test, no significant association between p53 expression and histological type, age and sex distributions was demonstrated (p>0.05). This study confirms that p53 overexpression is present in a subset of Moroccan NPC patients. Our results are consistent with those reported by other studies concerning the same NPC endemic risk area and provide original data concerning Morocco.
    African health sciences 09/2013; 13(3):710-7.
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    ABSTRACT: Worldwide, cervical cancer is the second most common cancer in women. High-risk human papillomavirus (HPV) play a crucial role in the etiology of cervical cancer and the most prevalent genotype is HPV16. HPV 16 intratypic variants have been reported to differ in their prevalence, biological and biochemical properties. The present study was designed to analyze and identify HPV type 16 E6 variants among patients with cervical cancer in Morocco. A total of 103 HPV16 positive samples were isolated from 129 cervical cancer cases, and variant status was subsequently determined by DNA sequencing of the E6 gene. Isolates from patients were grouped into the European (E), African (Af) and North-American (NA1) phylogenetic clusters with a high prevalence of E lineage (58.3%). The Af and NA1 variants were detected in 31.1% and 11.6% of the HPV16 positive specimens, respectively, whereas, only 3% of cases were prototype E350T. No European-Asian (EA), Asian (As) or Asian-American (AA) variants were observed in our HPV16-positive specimens. At the amino acid level, the most prevalent non-synonymous variants were L83V (T350G), H78Y (C335T), E113D (A442C), Q14D (C143G/G145T) and R10I (G132T), and were observed respectively in 65%, 41.8%, 38.8%, 30.1% and 23.3% of total samples.Moreover, HPV16 European variants were mostly identified in younger women at early clinical diagnosis stages. Whereas, HPV16 Af variants were most likely associated with cervical cancer development in older women with pronounced aggressiveness. This study suggests a predominance of E lineage strains among Moroccan HPV 16 isolates and raises the possibility that HPV16 variants have a preferential role in progression to malignancy and could be associated with the more aggressive nature of cervical cancer.
    BMC Infectious Diseases 08/2013; 13(1):378. · 3.03 Impact Factor
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    ABSTRACT: Breast cancer is the most common cancer affecting women all over the world. In addition to hormonal and environmental causes, family history is emerging as an important risk factor in the etiology of this disease. The aim of the present study is thus to compare the clinico-pathological features of familial and sporadic breast cancer in Moroccan patients. A comparative retrospective cohort study was conducted on 570 women with familial and sporadic breast cancer who were diagnosed and treated in the Oncology Center of Ibn Rochd University Hospital in 2009. Data on breast cancer risk factors and clinico-pathological characteristics of the tumors were extracted from patients' medical records. Familial cases represented 18.4% of breast cancer patients. The age of onset appears to be earlier in familial breast cancers (P=0.0024). There were no significant differences between familial and sporadic groups according to histological type, tumor size and estrogen receptor status. However, Scarff-Bloom-Richardson grade III was found in 43.8% of familial cases vs 26.7% of sporadic cases (P=0.0127) and the lymph node involvement was observed in 72.4% of familial cases vs 58.9% in sporadic cases (P=0.0213). Moreover, familial breast cancer patients present especially progesterone receptor-negative tumors (P=0.0380). Our initial significant findings show that familial breast cancer seems to affect young women and tends to present high Scarff-Bloom-Richardson grade tumors with lymph node involvement and absence of progesterone receptors. These preliminary results may be useful as clinical marker to identify familial breast cancer allowing the development of careful follow-up for this patients subtype.
    Ethiopian journal of health sciences. 07/2013; 23(2):150-7.
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    ABSTRACT: Orbital metastasis from colorectal cancer are extremely rare. Only six cases are described in the literature. The discrepancy between the frequency of colorectal cancer and the rarity of metastasis to the eye and orbit remains paradoxical and enigmatic. We report the case of an 18-year-old young woman with orbital metastasis as the presenting sign of rectal cancer. Proptosis is the most frequent presenting clinical sign. Once the diagnosis is made, the prognosis is poor and treatment is palliative.
    Journal francais d'ophtalmologie 05/2013; 36(5):e73–e75. · 0.51 Impact Factor
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    ABSTRACT: Nasopharyngeal carcinoma (NPC) is a rare malignancy in most parts of the world. It is an Epstein-Barr virus-associated malignancy with an unusual racial and geographical distribution. The host innate immune sensor genes play an important role in infection recognition and immune response against viruses. Therefore, we examined the association between polymorphisms in genes within a group of pattern recognition receptors (including families of toll-like receptors, C-type lectin receptors, and RIG-I-like receptors) and NPC susceptibility. Twenty six single nucleotide polymorphisms (SNPs) in five pattern-recognition genes were genotyped in 492 North African NPC cases and 373 frequency-matched controls. TLR3_rs3775291 was the most significantly associated SNP (OR: 1.49; 95%CI: 1.11-2.00; P: 0.008; dominant model). The analysis showed also that CD209_rs7248637 (OR: 0.69; 95%CI: 0.52-0.93; P: 0.02; dominant model) and DDX58_rs56309110 (OR: 0.70; 95%CI: 0.51-0.98; P: 0.04) were associated with the risk of NPC. An 18% increased risk per allele was observed for the five most significantly associated SNPs, TLR3_rs3775291, CD209_rs7248637, DDX58_rs56309110, CD209_rs4804800 and MBL2_rs10824792, (ptrend 8.2x10(-4)). Our results suggest that genetic variation in pattern-recognition genes is associated with the risk of NPC. These preliminary findings require replication in larger studies.
    G3-Genes Genomes Genetics 04/2013; · 1.79 Impact Factor
  • Indian Journal of Human Genetics 04/2013; 19(2):274-5.
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    ABSTRACT: Few population-based cancer registries are in place in developing countries. In order to know the burden of cancer in Moroccan population, cancer registry initiative was put in place in the Casablanca district, the biggest city of Morocco. The data collected covers 3.6 millions inhabitant and included Casablanca city and the administrative region. The data collected in the years 2005-07 show that the top 5 forms of cancers in women were breast (ASR: 36.4 per 100,000), cervical (15.0), thyroid (6.7), colon-rectum (5.8), and ovarian (5.3); the top 5 cancers in men were lung (25.9), prostate (13.5), bladder (8.7), colon-rectum (8.1) and non-Hodgkin lymphoma (7.2). Tumours of haematopoietic and lymphoid tissues represented 11% of all cancers (skin excluded); some presented unusual sex ratios. For breast, cervical, colorectal and thyroid cancer, respectively 57%, 42%, 28% and 60% of the cases were under 50 years of age. This was attributable to particularly low numbers of cases recorded among old people, and the young age of the general population; the observed age-specific incidences under age 50 were not higher than in western countries. Cancers at young ages were particularly common in women: 67% of the cases were under 50. Stage at diagnosis could be obtained for 82% of the breast cancer cases and was as follows: 28% local, 63% regional and 9% distant, in the absence of screening. These first population-based data have provided an invaluable resource for the national cancer control plan of Morocco, and will be useful tool to its future evaluation.
    The Pan African medical journal. 01/2013; 16:31.
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    The Pan African medical journal. 01/2013; 14:114.
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    ABSTRACT: Granular cell tumour, or Abrikossoff's tumour, is a rare, ubiquitous tumour, with mostly benign evolution. The malignant forms represent 1–3% of the cases. The vulvar localization is exceptional. We report the case of a 28-year-old patient who presented a vulvar Abrikossoff's tumour. Initially considered benign, the tumour was treated by exclusive local surgery. Five months later, the tumour showed a malignant transformation. The tumour size was 14 cm in its major axis with the presence of not systematized scattered mitoses, PS 100 was positive at 100% and Ki 67 to 20%. Because of malignant and economic excision of the neoplasm, the patient received adjuvant radiotherapy. After 20 months, the patient had a local recurrence and lung metastasis, supporting the diagnosis of malignancy. She received two chemotherapy regimens of 5-fluoro-uracil/cisplatin and pacliatxel/carboplatin without any response. Following the failure of chemotherapy, the patient received symptomatic medical treatment. This observation leads to advocate an aggressive surgical treatment and strict supervision of all granular cell tumours.
    Cancer/Radiothérapie 01/2013; 17(7):671–674. · 1.48 Impact Factor
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    The Pan African medical journal. 01/2013; 14:161.
  • Journal of Cardiology Cases 01/2013;
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    Médecine Nucléaire. 08/2012; 36(8):478.
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    ABSTRACT: Isolated splenic metastases of colorectal cancers are very rare but possible even after several years of remission. We report the case of a 74-year-old man who developed isolated metachronous splenic metastasis of left colon cancer 5 years after the treatment of the primary tumor. Splenic metastasis was found by imaging examinations. The patient underwent splenectomy and the histological examination confirmed the metastatic nature of the splenic lesion. 18F-FDG PET allows both staging and resectability of these isolated metachronous splenic metastasis because a long-term survival can be achieved by splenectomy.
    Médecine Nucléaire. 06/2012; 36(6):329–331.
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    ABSTRACT: Breast cancer is the most common female cancer in Morocco. About 5 to 10% are due to hereditary predisposition and mutations in BRCA1 and BRCA2 genes are responsible for an important proportion of high-risk breast/ovarian cancer families. The relevance of BRCA1/2 mutations in the Moroccan population was not studied. The main objective of this study is to investigate the spectrum of BRCA1 and BRCA2 germline mutations in early onset and familial breast/ovarian cancer among Moroccan women. We screened the entire coding sequences and intron/exon boundaries of BRCA1 and BRCA2 genes in 40 patients by direct sequencing. Nine pathogenic mutations were detected in ten unrelated families, five deleterious mutations in BRCA1 gene and four mutations in BRCA2 gene. Four novel mutations were found: one in BRCA1 (c.2805delA/2924delA) and three in BRCA2 (c.3381delT/3609delT; c.7110delA/7338delA and c.7235insG/7463insG). We also identified 51 distinct polymorphisms and unclassified variants (three described for the first time). Our data suggest that BRCA1 and BRCA2 mutations are responsible for a significant proportion of familial breast cancer in Moroccan patients. Therefore full BRCA1/2 screening should be offered to patients with a family history of breast/ovarian cancer.
    Gynecologic Oncology 03/2012; 125(3):687-92. · 3.93 Impact Factor
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    ABSTRACT: Adenoid cystic carcinoma of the breast is a rare neoplasm accounting for less than 1% of breast cancers. The prognosis is better compared to other breast cancers. The authors report a case of an adenoid cystic carcinoma of the breast, diagnosed in a 57-year-old women who consulted for a nodule of the upper outer quadrant of the right breast associated with mastodynia. The tumor was classified cT3N0M0 according to TNM 2002. An excisional biopsy and extemporaneous histological study were performed. The treatment was completed by a mastectomy with ipsilateral axillary lymph node dissection. The histopathological and immunohistochemical study confirmed the diagnosis of adenoid cystic carcinoma without hormone receptor expression and without overexpression of the Her-2-neu. The tumor was classified pT3N-M0. An adjuvant external beam radiotherapy was delivered to the chest wall at the dose of 50 Gy. The patient is disease free after a follow-up of 24 months. Breast adenoid cystic carcinoma has a good prognosis, despite its triple-negative phenotype. Because of the rarity of this tumor, its treatment is not codified.
    Imagerie de la Femme 03/2012; 22(1):38–40.
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    ABSTRACT: Lung cancer is the leading cause of cancer morbidity and mortality. Its management has a significant economic impact on society. Despite a high incidence of cancer, so far, there is no national register for this disease in Morocco. The main goal of this report was to estimate the medical costs of lung cancer in our country. We first estimated the number of annual new cases according to stage of the disease on the basis of the Grand-Casablanca-Region Cancer Registry data. For each sub-group, the protocol of treatment was described taking into account the international guidelines, and an evaluation of individual costs during the first year following diagnosis was made. Extrapolation of the results to the whole country was used to calculate the total annual cost of treatments for lung cancer in Morocco. Overall approximately 3,500 new cases of lung cancer occur each year in the country. Stages I and II account for only 4% of cases, while 96% are diagnosed at locally advanced or metastatic stages III and IV. The total medical cost of lung cancer in Morocco is estimated to be around USD 12 million. This cost represents approximately 1% of the global budget of the Health Department. According to AROME Guidelines, about 86% of the newly diagnosed lung cancer cases needed palliative treatment while 14% required curative intent therapy. The total cost of early and advanced stages lung cancer management during the first year were estimated to be 4,600 and 3,420 USD, respectively. This study provides health decision-makers with a first estimate of costs and the opportunity to achieve the optimal use of available data to estimate the needs of health facilities in Morocco. A substantial proportion of the burden of lung cancer could be prevented through the application of existing cancer control knowledge and by implementing tobacco control programs.
    Asian Pacific journal of cancer prevention: APJCP 01/2012; 13(4):1547-51. · 1.27 Impact Factor
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    ABSTRACT: In Morocco, cervical cancer is the second most common cancer in women. The cases of cervical cancer are diagnosed at a late stage: 43.7% presented at stage II of diagnosis (FIGO) and 38.1% in advanced stage (stage III and IV). The main objective of this study is to investigate factors associated to late the diagnosis of cervical cancer in Morocco as measured by the stage at diagnosis and delays between first symptoms and diagnosis of cancer. Cross-sectional studies, conducted from June-2008 to June-2010 at two main oncological centers. Two-hundred cases were recruited. Stages I & II were identified as "early-stage". The dates of first-symptoms, first-consultation and first-diagnosis were used to define "Patient", "Medical" and "Total" delays. Elevated risks for late stage was observed for women unmarried (OR=5.0; 95%CI: 1.43-16.66); living > 100 km from center of diagnosis (OR=4.51; 95%CI: 1.35-15.11); without a familial history of cancer (OR=14.28; 95%CI: 2.22-100) and whose was the first symptom not bleeding (OR=25; 95%CI: 1.62-300). Frequency of housewives was significantly higher for women with a "patient-delay" ≥ 1 month. Frequency of patients who had symptoms of "bleeding" was significantly higher for women with a "patient-delay" <1 month. Frequency of patients from urban area was significantly higher for women with a "Medical-delay" < 1 month. Elevated risks for a long "Total-delay" was observed for women aged < 50 years (OR=2.44; 95%CI: 1.24-4.76); illiterate (OR = 3.85; 95%CI: 1.45-10.00) and from rural-area (OR=2.56; 95%CI: 1.25-5.26). Our results may represent an important tool in guiding the actions for an early diagnosis of cervical cancer.
    The Pan African medical journal. 01/2012; 12:14.