Scalable Multipartite Entanglement Created by Spin Exchange in an Optical Lattice.

Ultracold atoms in optical lattices form a competitive candidate for quantum computation owing to the excellent coherence properties, the highly parallel operations over spins, and the ultralow entropy achieved in qubit arrays. For this, a massive number of parallel entangled atom pairs have been realized in superlattices. However, the more formidable challenge is to scale up and detect multipartite entanglement, the basic resource for quantum computation, due to the lack of manipulations over local atomic spins in retroreflected bichromatic superlattices. In this Letter, we realize the functional building blocks in quantum-gate-based architecture by developing a cross-angle spin-dependent optical superlattice for implementing layers of quantum gates over moderately separated atoms incorporated with a quantum gas microscope for single-atom manipulation and detection. Bell states with a fidelity of 95.6(5)% and a lifetime of 2.20±0.13 s are prepared in parallel, and then connected to multipartite entangled states of one-dimensional ten-atom chains and two-dimensional plaquettes of 2×4 atoms. The multipartite entanglement is further verified with full bipartite nonseparability criteria. This offers a new platform toward scalable quantum computation and simulation.

Low-noise and high-power second harmonic generation of 532 nm laser for trapping ultracold atoms.

Optical lattices for coherently manipulating ultracold atoms demand high-power, low-noise, narrow-line-width, and continuous-wave lasers. Here, we report the implementation of a 30 W 532 nm low-noise laser by second harmonic generation from a 1064 nm fiber laser, which is capable to generate optical lattices for a quantum gas microscope of Rb87 atoms. The overall conversion efficiency is 59% at an input power of 51 W with a lithium triborate crystal coupled to a ring cavity. The relative intensity noise of the output laser is suppressed to -120 dBc/Hz in the range of 10 Hz-100 kHz with a high dynamic range of over 50 dB, which is suitable for long-term trapping and coherent manipulation of the quantum gases.

A high-power and low-noise 532-nm continuous-wave laser for quantum gas microscopy.

Low-noise, high-power 532-nm lasers are of great interest in many scientific research studies, such as gravitational wave detection and ultracold atom experiments. In particular, in the experiments of quantum gas microscopy, a large power of laser is necessary during the imaging process, while low noise is important for preventing the atoms from being heated up. In this work, we report on the generation of such a 532-nm continuous-wave laser by coherently combining two laser beams produced by single-pass second-harmonic generation. The power of the combined laser is up to 17 W. With the help of intensity stabilization, we are able to suppress the relative intensity noise to below -120 dBc/Hz. The generated laser satisfies the experimental requirements for integrating optical superlattices with a quantum gas microscope.

High-powered optical superlattice with robust phase stability for quantum gas microscopy.

Optical superlattice has a wide range of applications in the study of ultracold atom physics. Especially, it can be used to trap and manipulate thousands of atom pairs in parallel which constitutes a promising system for quantum simulation and quantum computation. In the present work, we report on a high-power optical superlattice formed by a 532-nm and 1064-nm dual-wavelength interferometer with a short lattice spacing of 630 nm. The short-term fluctuation (in 10 seconds) of the relative phase between the short lattice and the long lattice is measured to be 0.003π, which satisfies the needs for performing two-qubit gates among neighboring lattice sites. We further implement this superlattice in a 87Rb experiment with a quantum gas microscope of single-site resolution, where the high-power 532-nm laser is necessary for pinning atoms in the short lattice during imaging, providing a unique platform for engineering quantum states.

Clinical features and treatment outcomes of intraocular lymphoma: a single-center experience in China.

AIM: To investigate the clinical manifestations, diagnostic approaches, treatments, and outcomes of intraocular lymphoma. METHODS: In this retrospective study, 16 patients (28 eyes) with intraocular lymphoma were recruited in the Department of Ophthalmology, Peking Union Medical College Hospital, from 2004 to 2019. All patients underwent comprehensive ophthalmic examinations. Vitreous specimens of 13 patients were sent for cytopathology examination and other adjunctive diagnostic procedures. Three patients were diagnosed with intraocular lymphoma according to analysis of the histopathological results of systemic lymphoma by one clinician. Twenty-three eyes were treated with intravitreal administration of methotrexate, 4 eyes could not receive ocular treatment due to life-threatening lymphoma, and 1 eye did not require ocular treatment because the fundus lesions regressed after systematic chemotherapy. RESULTS: In 28 eyes, 25 eyes were diagnosed with vitreoretinal lymphoma, and 3 eyes were diagnosed with ciliary body lymphoma, all of which were non-Hodgkin diffuse large B cell lymphomas. The final visual acuity improved in 15 eyes (54%), remained unchanged in 5 eyes (18%), and decreased in 8 eyes (29%). Anterior segment inflammation disappeared or reduced in 8 and 5 eyes, respectively; and 15 eyes had no anterior segment reaction. Twenty eyes had mild vitreous opacity, 1 eye had mild vitritis, and 7 eyes had pars plana vitrectomy combined with silicone oil tamponade. Fundus lesions disappeared in 9 eyes and were relieved in 5 eyes; 4 eyes showed no changes, and the remaining 10 eyes' fundus were normal. CONCLUSION: The clinical manifestations of intraocular lymphoma are diverse, and the misdiagnosis rate is high. Cytopathological analysis of vitreous is one of the gold standards for the diagnosis. Immunohistochemistry, gene rearrangement and flow cytometric immunophenotypic analysis can improve the diagnostic rate. Ocular chemotherapy or radiotherapy regimens may preserve visual acuity, and a multidisciplinary team can provide individualized treatment for the patients.

Vascular endothelial growth factor concentration in vitreous humor of patients with severe proliferative diabetic retinopathy after intravitreal injection of conbercept as an adjunctive therapy for vitrectomy.

BACKGROUND: Proliferative diabetic retinopathy (PDR) is a progressive stage of diabetic retinopathy featured by the formation of neovascular and proliferative membrane. Vascular endothelial growth factor (VEGF) acts as a pivot factor in the development of neovascularization. This study was to investigate the changes of intravitreal VEGF concentrations of severe PDR after intravitreal injection of conbercept (IVC) and its potential advantages to the following vitrectomy. METHODS: This was a prospective, interventional, randomized controlled study. Sixty eyes (60 patients) with severe PDR and 20 eyes from 20 patients with rhegmatogenous retinal detachment complicated with proliferative vitreoretinopathy were enrolled in this study. PDR eyes were randomly assigned to three groups by sortation randomization method with 20 eyes in each based on the interval of preoperative IVC (group A: 7 days, group B: 14 days, group C: non-IVC). Another 20 eyes without diabetes were enrolled as the non-diabetic control group (group D), receiving PPV directly. Vitreous specimens of all 80 patients were collected and evaluated afterwards. The intravitreal VEGF concentration of the four groups, and the total surgical time and the intraoperative bleeding rate of the PDR groups were recorded. RESULTS: The mean intravitreal VEGF concentrations of groups A-D were 66.6 ±â€Š43.3, 93.1 ±â€Š52.3, 161.4 ±â€Š106.1 and 1.8 ±â€Š1.2 pg/mL, respectively. It increased significantly in PDR patients (groups A, B and C) (P = 0.002, <0.001, and <0.001, respectively). PDR patients with preoperative IVC (groups A and B) presented significantly lower VEGF concentrations (P < 0.001 and 0.001), intraoperative bleeding rates (P = 0.004) and total surgical time (P < 0.001, P = 0.003) compared with group C. No statistical differences were presented between groups A and B on the three parameters. CONCLUSION: Seven days and 14 days of preoperative IVC are equally efficient and safe for the vitrectomy of severe PDR patients through decreasing vitreous VEGF concentrations, intraoperative bleeding rate and total surgical times.

Varicella-zoster virus as a causative agent of acute retinal necrosis in younger patients.

BACKGROUND: Herpes virus is considered to be the pathogen of acute retinal necrosis (ARN) infection. Previous studies have found that patients with ARN caused by the varicella-zoster virus (VZV) are often older, and patients with herpes simplex virus (HSV) induced ARN are considerably younger. However, in our clinical work, we find that VZV is also a pathogen in younger ARN patients. We, therefore, aimed to analyze the common etiology of younger ARN patients. METHODS: A retrospective analysis was made of 20 eyes (18 patients) diagnosed as having ARN in the Department of Ophthalmology of Peking Union Medical College Hospital from 2014 to 2016. All patients were reviewed for demographic data, clinical course, clinical manifestations, time from onset to initial physician visit, duration of follow-up, visual acuity at both presentation and final visit, and treatment strategies. A paired t test was used to compare visual acuity between the presenting vision and those of final follow-up. Vitreous or aqueous specimens from 18 eyes of 18 patients were analyzed with multiplex polymerase chain reaction (mPCR)/quantitative PCR (qPCR) and xTAG-liquid chip technology (xTAG-LCT) to determine the causative virus of ARN. RESULTS: Final best visual acuity (BCVA) improved significantly from 1.36 ±â€Š0.95 (median 20/400) to 0.95 ±â€Š0.82 (median 20/100) (t = 2.714, P = 0.015) after systemic and intravitreal antiviral treatment combined with or without pars plana vitrectomy. PCR and xTAG-LCT results showed four of the five samples in the younger group (32.2 ±â€Š5.2 years) and 12 of the 13 samples in the senior group (53.6 ±â€Š4.9 years) were positive for VZV, and two of the five samples in the younger group were positive for HSV-1. CONCLUSIONS: This study demonstrates that VZV is also a common causative virus for ARN in younger patients. Considering this finding, a systemic antiviral treatment protocol should be immediately changed to intravenous ganciclovir when the patient does not respond to acyclovir before determining the causative virus, especially in younger patients.

[Recent advances in study of neuroglobin expression in retinal diseases].

Neuroglobin (NGB) is widely exists in the retina and predominantly expressed in the plexiform layers and the inner segments. The physiological roles of NGB may include transportation of oxygen, protection against ischemia/hypoxia injury and oxidative stress, function as a redox-coupled sensor regulating the G-protein coupled transduction pathway, protection against neuronal apoptosis, and working as a terminal oxidase. Based on the function and distribution of NGB and the etiology and pathogenesis of retinal degeneration; it is possible that NGB may play a role in the development of retinal degeneration.

[Predictive value of in vitro MTT assay chemosensitivity test of cytotoxic drug activity in cervical cancer].

BACKGROUND & OBJECTIVE: In recent years, the neoadjuvant chemotherapy for cervical cancer has evoked more and more attention and has been used widely. But the chemosensitivity of individuals to various antitumor drugs is different. This study was to investigate the chemosensitivity of cervical cancer cells to antitumor drugs using in vitro MTT assay chemosensitivity test. METHODS: The sensitivity of fresh human cervical cancer cells from 32 patients to 9 cytotoxic drugs was tested using in vitro MTT assay. RESULTS: The cytotoxic activities of the 9 drugs for cervical cancer were in sequence from high to low as follows: liposomal paclitaxel, taxol, carboplatin (CBP), ifosfamide (IFO), etoposide (VP-16), 5-fluorouracil (5-FU), cisplatin (DDP), bleomycin (BLM), and cyclophosphamide (CTX). Generally, cervical cancer cells were more sensitive to paclitaxel, taxol, and CBP than to other drugs (P<0.05) with inhibition rates of 56.56%, 55.66%, and 46.81%, respectively. Stage Ib1 cervical cancer cells were more sensitive to taxol, paclitaxel, and CBP than to other drugs with inhibition rates of 58.71%, 53.00%, and 49.25%, respectively; stage Ib2 cervical cancer cells were more sensitive to paclitaxel and taxol than to other drugs with inhibition rates of 65.26% and 50.06%. Both moderately and poorly differentiated squamous cell cancer cells were more sensitive to taxol, paclitaxel, and CBP than to other drugs with inhibition rates of 52.01%, 49.21%, and 40.02% for the former, and 60.02%, 61.16%, and 48.75% for the latter. CONCLUSIONS: MTT assay, a sensitive and widely used chemosensitivity testing method, is helpful in sensitive drug screening and neoadjuvant chemotherapy regimen selection for cervical cancer. Cervical cancer cells are more sensitive to paclitaxel, taxol, and CBP than to other tested drugs in this study.

[A multicenter randomized clinical trial of weekly paclitaxel and carboplatin vs three weeks paclitaxel and carboplatin as first line chemotherapy in epithelial ovarian cancer].

OBJECTIVE: To compare the efficacy of combination regiments of taxol given weekly plus carboplatin and taxol given every three weeks plus carboplatin. To observe the toxicity of the two regiments. To observe the two-year survival rate in the two groups. METHODS: Total 125 eligible patients in 13 centers of CGOG were entered into the two arms of this randomized clinical trial, of whom 51 were entered into weekly taxol group and 74 entered into 3 weeks taxol group. RESULTS: 81.6% (102/125) of patients had satisfactory decreasing of CA125 level after optimal cytoreductive surgery and chemotherapy. 86.3% (44/51) of patients is in weekly group and 78.4% (58/74) of patients in three weeks group (P > 0.05). Relapse frequency is 29.7% in every three weeks group and 19.6% in weekly group (P > 0.05). Median interval to relapse is 15.7 months in every three weeks group and 13.6 months in weekly group (P > 0.05). One-year survival rate is 95.2% in every three weeks and 93.9% in weekly group (P > 0.05). Two-year survival rate is 78.7% in every three weeks and 85.3% in weekly group (P > 0.05). Grade III and IV myelosuooression is 45.9% in three weeks group and, 27.5% in weekly group (P < 0.05). CONCLUSION: (1) The two regiments had equal efficacy. (2) Myelosuppression was less frequency in the weekly group than in every three weeks group. (3) Weekly taxol therapy has mild toxicity and is more suitable for the old and feeble patients. Weekly taxol therapy can be conveniently administered in outpatients department.

[Selecting postoperative chemotherapy regimen and optimizing therapy cycle for stage II-IV ovarian epithelial carcinoma].

BACKGROUND & OBJECTIVE: The postoperative chemotherapy for ovarian epithelial carcinoma need to be improved. This study was conducted to seek suitable chemotherapy for patients with stage II-IV ovarian epithelial carcinoma. METHODS: The records of 325 patients with stage II-IV ovarian epithelial carcinoma, received different postoperative chemotherapy (HCBP, CP, CBP, or CAP) regimens for different cycles from Jan. 1986 to Dec. 2000 in our cancer center, were analyzed retrospectively. The treatment outcome and prognosis of these patients were analyzed. RESULTS: The 5-year survival rate of the patients received HCBP regimen was significantly higher than those of the patients received CP, CBP, or CAP regimens (84.3% vs. 43.0%, P=0.008; 46.1%, P=0.016; and 40.0%, P=0.002). The incidence of chemotherapy-related complications was significantly lower in the patients received CP regimen than in the patients received HCBP, CBP, or CAP regimens (76.0% vs. 91.3%, P=0.015; 88.2%, P=0.043; and 87.7%, P=0.038). The 5-year survival rates of the patients received more than 6 or 5-6 cycles were significantly higher than that of the patients received less than 5 cycles (56.2% or 59.5% vs. 35.1%, P< 0.001). The incidences of chemotherapy-related complications in such patients were 89.6%, 81.1%, and 82.8% (P=0.214), respectively. CONCLUSIONS: We recommend 5-6 cycles of CP-based chemotherapy regimens for stage II-IV ovarian epithelial carcinoma. Prolonging the duration of each chemotherapy cycle might achieve good prognosis.

[Analysis of long-term prognostic factors of epithelial ovarian cancer].

BACKGROUND & OBJECTIVE: Because most of patients with ovarian cancer are in advanced stage when initially noted, and are prone to relapse, ovarian cancer is a tough disease to treat. This study was to determine long-term prognostic factors correlated with prolonged survival of epithelial ovarian cancer patients, give reference for clinical practice. METHODS: Records of 691 patients with epithelial ovarian cancer, admitted in our hospital from Jan. 1986 to Dec. 2000, were retrospectively analyzed. Survival rate was calculated by life table method, and relevant factors were evaluated by univariate analysis. The potential prognostic variables were studied by Cox regression model. RESULTS: The 5-year, and 10-year survival rates of all patients were 56.0%, and 44.6%. Cox regression model revealed that clinical stage, size of tumor residues, pathologic type, histological grade, and number of chemotherapy cycles after surgery emerged as independent prognostic factors. CONCLUSION: Accurate clinical staging and histopathologic assessment, satisfactory cytoreduction, and effective adequate chemotherapy may affect prognosis of ovarian cancer patients.

[Study of different surgeries for clinical stage I endometrial carcinoma].

OBJECTIVE: To compare the outcomes and the risk of post-operative complications in patients with stage I endometrial carcinoma who were treated with different surgeries. METHODS: A total of 211 cases with stage I endometrial cancer treated with surgery in our Cancer Center from Jan 1986 to Dec 1997 were analyzed retrospectively. Sixty-one patients (group 1) underwent simple hysterectomy and salpingo-oophorectomy and 150 patients (group 2) underwent radical hysterectomy. The 5-year survival rates and the risk of post-operative complications were compared between two groups. RESULTS: Five-year survival rates of the group 1 and 2 were 96.0% and 93.5% (P > 0.05), respectively. The recurrence rates of the two groups were 6.6% and 10.7% (P > 0.05), respectively. The overall rates of post-operative complications in the two groups were 11.5% and 24.7% (P < 0.05), respectively. CONCLUSION: The patients with stage I endometrial carcinoma who were treated with simple hysterectomy and salpingo-oophorectomy did almost as well as those who underwent radical hysterectomy.

[How to increase the optimal rate of secondary cytoreductive surgery in recurrent epithelial ovarian cancer].

BACKGROUND & OBJECTIVE: Optimal secondary cytoreduction is of prognostic importance for recurrent epithelial ovarian cancer. To increase the optimal rate of secondary cytoreductive surgery in these patients is helpful for improving the prognosis of recurrent epithelial ovarian cancer patients. In this retrospective study, we investigated how to increase the optimal rate of secondary cytoreductive surgery in recurrent epithelial ovarian cancer patients. METHODS: The clinical data of 54 patients with recurrent epithelial ovarian cancer were analyzed retrospectively, who received secondary cytoreductive surgery during March 1 1997 to March 31 2003 in Cancer Center, Sun Yat-sen University. Nineteen patients had tumors only in pelvis, and 35 patients both in pelvis and abdomen. Single tumor was found in 16 patients and multiple tumors in 38 patients. Thirty-eight patients had ascites and 16 patients no ascites. Preoperative chemotherapy was given to 20 cases, and responses were observed in 12 patients and no response in 8. Multivariate logistic regression was carried out to investigate the relationship of residual diseases of secondary cytoreduction with age, time to recurrence, recurrent sites, ascites, and preoperative salvage chemotherapy. RESULTS: Optimal surgical cytoreduction was obtained in 81.5% (44/54) of the patients, with no macroscopic residual diseases in 53.7% (29/54) and residual diseases

[Human papillomavirus infection and other risk factors for cervical cancer in Chinese and Australian patients].

OBJECTIVE: To investigate the infection rate and genotypes of HPV in cervical cancer and analyse the clinicopathological characteristics and risk factors for cervical cancer with HPV infection in Chinese and Australian patients. METHODS: The human papillomavirus (HPV) DNA in cervical cancer specimens from 115 Chinese women and 79 Australian women was detected by polymerase chain reaction.HPV types were determined by sequencing and reverse hybridization. The relationship a between the HPV types and the clinicopathological characteristics of cervical cancer in Chinese and Australian women were analyzed. RESULTS: HPV DNA positive rate was 76. 5% in the Chinese women (88/115) and 89.9% in the Australian women (71/79, P = 0. 017). There were no significant differences of HPV 16 and HPV 18 prevalence between the two groups (P = 0. 806). HPV 58 and 59 were more prevalent in Chinese women (both 6. 8%) than in Australian women (1. 4% and 0). In China, HPV 58 prevalence rate was significantly higher in the Hunan region than in the Guangdong region (P = 0. 007). The mean ages at diagnosis was 44. 24 +/- 11. 31 years for Chinese and 53.08 +/- 16. 54 years for Australian women (P <0. 001). Combining the two groups, no relationship was found between HPV positivity/negativity and the FIGO stage, macroscopic features, histological type and grade of tumour, as well as pelvic lymphatic metastasis. However, HPV type wa significantly correlated with the histological type (P < 0. 001 ) and grade of cervical tumour (P = 0. 028). In comparison with the Chinese group, the Australian group presented more advanced cancers, a greater proportion of endocervical patterns, and more non-squamous cell carcinoma. There were no significant differences in grade of tumour and lymphatic node status between the two groups. CONCLUSION: The HPV infection rate in cervical cancer patients is significantly higher among Australians than among Chinese, which may be caused by more sexual transmitted diseases and more sex partners among the former group. HPV 58 and HPV 59 tie for third common genotypes in cervical cancers in China, however, these types are uncommon in Australia. There was a significant variation in types of HPV infection among different histological type and grade of cervical tumors. Both HPV 18 and 59 appear to be associated with the malignancy of cervical cancer.

[Clinical significance of vascular endothelial growth factor in sera of patients with gynaecological malignant tumors].

BACKGROUND & OBJECTIVE: Experimental and clinical evidence links tumor growth, invasion, and metastatic potential with neoangiogenesis. This process is modulated by several angiogenic growth factors, such as vascular endothelial growth factor(VEGF). Few data are currently available on serum level in patients with gynaecological malignant tumors. This study was designed to determine the serum VEGF level in the patients with gynaecological malignant tumors and its significance as a tumor marker. MATERIAL & METHODS: Preoperative serum VEGF level were measured in 50 cervical cancer, 39 endometrial cancer, 89 ovarian cancer patients, and 80 normal healthy women; The serum VEGF levels were also measured in 3, 6, 9 months after operation and when recurrence in three curative resection patients with ovarian cancer; using commercially available enzymelinked immonosarbent assay (R & D systems Inc. Minneapolis, MN, USA). Statistical analysis was performed by using the SPSS9.0 software package. Using 5th and 95th percentage describe the variant degree. RESULTS: The median level of VEGF in sera of 80 healthy women was 218.50 ng/L(42.06-671.70 ng/L), while in 50 cervical cancer, 39 endometrial cancer, and 89 ovarian cancer patients were 272.00 ng/L(91.94-745.53 ng/L), 383.50 ng/L(105.67-776.50 ng/L), and 479.85 ng/L (99.47-1326.88 ng/L), respectively. The VEGF levels in endometrial cancer and ovarian cancer patients were significantly higher than that in healthy women (P < 0.0001). But in cervical cancer patients the VEGF level, was not significant diffent compare with health wanen. After operation, 3, 6, 9 months the VEGF levels in 3 ovarian cancer patients were significantly lower than that of preoperative but it ascended again when the disease was recurrent 14, 17 months later in two cases. The VEGF level was significantly higher in advanced ovarian cancer patients (stage III-IV) than that in the early stage (stage I-II) (P < 0.05). CONCLUSION: The serum level of the VEGF may be used as a new tumor marker of endometrial cancer and ovarian cancer, for diagnoses and monitoring the progress of the disease.

[Relationship between expressions of p53, c-erbB2 genes, proliferating cell nuclear antigen and prognosis of patients with ovarian epithelial carcinoma].

BACKGROUND & OBJECTIVE: There were a few reports about the relationship between the expressions of p53, c-erbB2 Genes, and proliferating cell nuclear antigen (PCNA) with the prognosis from the patients with ovarian epithelial carcinoma(EOC). But conclusions were difference because of various methods and samples. This study was designed to investigate the relationship between the expressions of p53, c-erbB2 Genes, and PCNA with the prognosis from the patients with EOC. MATERIALS & METHODS: A total of 84 female patients with EOC were enrolled in this study, who were hospitalized in Department of Gynecology, Cancer Center, Sun yat-sen University from March 1 1990 to March 31 1994. The expressions of p53, c-erbB-2, and PCNA from the tumor samples were detected by Labelling-streptavidin-biotin (LSAB) immunohistochemistry assay. The relationship between the expression of the above marks and the prognosis of the patients were then analyzed. Statistical analyses were performed using SPSS 8.0 softwave. RESULTS: Forty-nine tumor samples (58.3%) exhibited p53 overexpression, 65 (77.4%) exhibited c-erbB2 overexpression, and all (100%) exhibited PCNA overexpression. In univariate analysis, there was marginally significant difference in the mean survival, the 5 years survival between the patients exhibited no c-erbB2 overexpression and the patients exhibited any c-erbB2 overexpression (P = 0.05). There was significant difference in the mean survival, the 5 years survival between the patients showed lower expression of PCNA and those showed higher expression of PCNA (P < 0.01), and there was no significant difference in the mean survival, the 5 years survival between the patients with overexpression of p53 and without overexpression of p53 (P > 0.05). In multivariate analysis, only stage and histological grade were the important significant prognostic factors of the patients with EOC, and there was no statistical significance between the overexpression of c-erbB-2 and PCNA with the prognosis. CONCLUSIONS: There was no significant correlation between the overexpression of p53 gene and the prognosis of the patients with EOC. The expression of c-erbB2 or PCNA was not an independent prognostic factor for prognosis of the patients with EOC. Stage and histological grade were still the independent significant prognostic factors of EOC.