Genome-editing techniques are promising tools in plant breeding. To facilitate a more comprehensive understanding of the use of genome editing, EU-SAGE developed an interactive, publicly accessible online database of genome-edited crop plants as described in peer-reviewed scientific publications.
The aim of the database is to inform interested stakeholder communities in a transparent manner about the latest evidence about the use of genome editing in crop plants. Different elements including the plant species, traits, techniques, and applications can be filtered in this database.
Regarding the methodology, a literature search in the bibliographic databases and web pages of governmental agencies was conducted using predefined queries in English. Identifying research articles in other languages was not possible due to language barriers. Patents were not screened.
Peer-reviewed articles were screened for relevance and were included in the database based on pre-defined criteria. The main criterium is that the research article should describe a research study of any crop plant in which a trait has been introduced that is relevant from an agricultural and/or food/feed perspective. The database does neither give information on the stage of development of the crop plant, nor on the existence of the intention to develop the described crop plants to be marketed.
This database will be regularly updated. Please contact us via the following webpage in case you would like to inform us about a new scientific study of crops developed for market-oriented agricultural production as a result of genome editing

Genome Editing Technique

Plant

Displaying 90 results

Traits related to biotic stress tolerance

Viral resistance: increased resistance to infection with the potato virus Y (PVY) and tolerance to salt and osmotic stress. PVY is one of the most economically important potato pathogens
(Makhotenko et al., 2019)
SDN1
CRISPR/Cas
Russia Moscow State University, Russia
Doka Gene Technologies Ltd, USA
Fungal resistance: Increased resistance to Phytophthora sojae, a pathogen severely impairing soybean production.
(Yu et al., 2021)
SDN1
CRISPR/Cas
Northeast Agricultural University
Chinese Academy of Agricultural Sciences
Shanghai Jiao Tong University
Jilin Academy of Agricultural Science
Jiamusi Branch Academy of Heilongjiang Academy of Agricultural Sciences
Heilongjiang Academy of Agricultural Sciences, China
Broad-spectrum resistance against multiple Potato virus Y (PVY)-strains.
( Noureen et al., 2022 )
SDN1
CRISPR/Cas
Constituent College of Pakistan Institute of Engineering and Applied Sciences (PIEAS)
University Institute of Biochemistry and Biotechnology (UIBB), Pakistan
Viral resistance: reduced viral accumulation and amelioration of virus-induced symptoms by Potato Virus Y.
(Lucioli et al., 2022)
SDN1
CRISPR/Cas
ENEA
Council for Agricultural Research and Economics (CREA), Italy
National Agricultural Research and Innovation Centre, Hungary
Resistance against leaf chewing insects: leaf-chewing insects cause yield loss and reduce seed quality in soybeans
(Zhang et al., 2022)
SDN1
CRISPR/Cas
Chinese Academy of Agricultural Sciences
Huazhong Agricultural University
Henan Agricultural University, China
Resistance to Phytophthora sojae, which severely impairs soybean production.
( Yu et al., 2022 )
SDN1
CRISPR/Cas
Northeast Agricultural University
Chinese Academy of Agricultural Sciences
Jilin Academy of Agricultural Science
Shanghai Jiao Tong University
Jiamusi Branch Academy of Heilongjiang Academy of Agricultural Sciences, China
Viral resistance: Resistance to Potato Virus Y (PVY), one of the most devastating viral pathogens causing substantial harvest losses.
(Zhan et al., 2019)

CRISPR/Cas
Hubei University
Huazhong Agricultural University, China
Max‐Planck‐Institut für Molekulare Pflanzenphysiologie, Germany
Fungal resistance: increased resistance to Phytophthora infestans, causing late blight disease, the most serious disease of potato crops worldwide. The pathogen can infect the leaves, stems and tubers of potato plants. An unprotected field can be completely destroyed in several days.
(Kieu et al., 2021)
SDN1
CRISPR/Cas
Swedish University of Agricultural Sciences, Sweden
University of Copenhagen, Denmark
Oomycete resistance: increased resistance against soybean root rot disease caused by Phytophthora sojae.
(Liu et al., 2023)
SDN1
CRISPR/Cas
Nanjing Agricultural University, China
Visual detection of Alternaria solani, the causal agent of early blight in potato, which poses a persistant threat to potato production worldwide. The platform is specific, sensitive and suitable for high-throughput detection.
( Guo et al., 2023 )
SDN1
CRISPR/Cas
Jilin University
Jilin Agricultural University
Shenzhen Campus of Sun Yat-sen University, China
Viral resistance: Resistance against potato leaf roll virus, potato virus Y, potato virus X and potato virus S, which have been recognized as the major potato viruses.
(Zhan et al., 2023)
SDN1
CRISPR/Cas
Hubei University
Huazhong Agricultural University
Chinese Academy of Agricultural Sciences, China
Fungal resistance: Improved resistance against Phytophtora without affecting potato growth and development.
(Bi et al., 2023)
SDN1
CRISPR/Cas
China Agricultural University
South China Agricultural University
Shanghai Normal University
Nanjing Agricultural University, China
Sensitive detection of two fungal pathogens (Diaporthe aspalathi and Diaporthe caulivora) that cause soybean stem canker. The method requires minimal equipment as well as training and shows potential for on-site screening.
( Sun et al., 2023 )
SDN1
CRISPR/Cas
Chinese Academy of Inspection and Quarantine
Shenyang Agricultural University
Huangpu Customs Technology Center
Technical Center of Hangzhou Customs
Dalian University, China
Fungal resistance: Enhanced resistance to powdery mildew, a fungal disease causing great losses in soybean yield and seed quality.
(Bui et al., 2023)
SDN1
CRISPR/Cas
Institute of Biotechnology
University of Science and Technology of Hanoi
Vietnam Academy of Science and Technology
Vietnam Academy of Agriculture Science, Vietnam
Washington University in St. Louis
University of Missouri, USA

Nematode resistance: resistance against soybean cyst nematode. Plant-parasitic nematode pests result in billions of dollars in realized annual losses worldwide.
(Usovsky et al., 2023)
SDN1
CRISPR/Cas
University of Missouri
University of Georgia
Beltsville Agricultural Research Center, USA

Traits related to abiotic stress tolerance

Drought and salt tolerance.
( Curtin et al., 2018 )
SDN1
CRISPR/Cas
University of Minnesota, USA
The University of Newcastle, Australia
Increased tolerance to drought trough reducing water loss. Tuber development.
( Gonzales et al., 2020 )
SDN1
CRISPR/Cas
Wageningen University and Research, The Netherlands
Centro Nacional de Biotecnología – CSIC
Universidad Politécnica de Madrid (UPM), Spain
Enhanced salinity stress tolerance.
( Wang et al., 2021 )
SDN1
CRISPR/Cas
Northeast Normal University
Jilin Academy of Agricultural Sciences
Linyi University
Chinese Academy of Sciences, China
Drought resistance.
( Zhang et al., 2022 )
SDN1
CRISPR/Cas
Jilin Agricultural University, China
Increased tolerance to cold stress.
( Teper-Bamnolker et al., 2022 )
SDN1
CRISPR/Cas
The Volcani Institute
The Hebrew University of Jerusalem
Danziger Innovations Limited, Israel

Traits related to improved food/feed quality

Amylose-free starch in tubers.
( Toinga-Villafuerte et al., 2022 )
SDN1
CRISPR/Cas
Texas A&
M University, USA
Mutant cell lines doubled the accumulation level of anthocyanins biosynthesized. The production of these important pigments was stabilized over time.
( D'Amelia et al., 2022 )
SDN1
CRISPR/Cas
National Research Council of Italy
University of Naples Federico II
Council for Agricultural Research and Economics, Italy
Reducing polyunsaturated fatty acids content and increased content of monounsaturated fatty acids. High levels of polyunsaturated fatty acids in natural soybean oil renders the oil susceptible to the development of unpalatable flavors and trans fatty acids.
( Fu et al., 2022 )
SDN1
CRISPR/Cas
Chinese Academy of Agricultural Sciences, China
Reduced browning and acrylamide. Acrylamide is a contaminant which forms during the baking, toasting and high-temperature processing of foods and is regarded as a potential carcinogen and neurotoxin.
( Nguyen Phuoc Ly et al., 2023 )
SDN1
CRISPR/Cas
Murdoch University, Australia
Reduced phytic acid content in soybean seeds. Monogastric animals are unable to digest phytic acid, making phytic acid phosphorous in animal waste one of the major causes of environmental phosphorus pollution.
( Song et al., 2022 )
SDN1
CRISPR/Cas
Dong-A University
Korea Research Institute of Bioscience Biotechnology (KRIBB), Korea
Improved seed protein content.
( Shen et al., 2022 )
SDN1
CRISPR/Cas
Corteva Agriscience
University of Arizona, USA
Improved cold storage and processing traits: lower levels of reduced sugars
(Yasmeen et al., 2022)
SDN1
CRISPR/Cas
University of the Punjab, Pakistan
Enhanced soybean aroma and functional marker for improving soybean flavor.
( Qian et al., 2022 )
SDN1
CRISPR/Cas
Zhejiang Academy of Agricultural Science
Ministry of Agriculture and Rural Affairs of China
Zhejiang University of Technology
Zhejiang Academy of Agricultural Sciences, China
Negligible levels of the possibly toxic steroidal glykoalkaloids (SGAs), but enhanced levels of steroidal saponins, which has pharmaceutically useful functions.
( Akiyama et al., 2017 )
SDN1
CRISPR/Cas
Kobe University
Riken Center for Sustainable Resource Science
Osaka University, Japan
Improved starch quality. Starch has many food and technical applications and is often modified to certain specifications.
( Andersson et al., 2017 )
SDN1
CRISPR/Cas
Swedish University of Agricultural Sciences, Sweden
Altered starch properties. Changes in amylopectin chain-lengths, starch granule initiation and branching frequency.
( Tuncel et al., 2019 )
SDN1
CRISPR/Cas
Norwich Research Park, UK
Reduced steroidal glycoalkaloids.
( Yasumoto et al., 2019 )

TALENs
Osaka University
RIKEN Center for Sustainable Resource Science
Kobe University, Japan
Altered protein composition due to mutations in seed storage proteins. Two major families of storage proteins, account for about 70% of total soy seed protein. Some major biochemical components influencing the quality of soy food products, for example tofu, are both the quantity and quality of storage proteins in soybean seeds.
( Li et al., 2019 )
SDN1
CRISPR/Cas
Agriculture and Agri-Food Canada
Western University
Harrow Research and Development Centre, Canada
Sun Yat-sen University
Guangdong Academy of Agricultural Sciences
Minnan Normal University
China
Generation of seed lipoxygenase-free soybean. Lipoxygenases are responsible for an unpleasant beany flavor by the oxidation of unsaturated fatty acids, restricting human consumption.
( Wang et al., 2020 )
SDN1
CRISPR/Cas
Fujian Agriculture and Forestry University
Hebei Academy of Agricultural and Forestry Sciences, China
Increased soya bean isoflavone content and resistance to soya bean mosaic virus. Isoflavonoids play a critical role in plant-environment interactions and are beneficial to human health.
( Zhang et al., 2020 )
SDN1
CRISPR/Cas
Nanjing Agricultural University
Anhui Academy of Agricultural Science
Guangzhou University, China
High oleic, low linoleic and alpha-linolenic acid phenotype. High concentration of linoleic and alpha-linolenic acids causes oxidative instability.
( Do et al., 2019 )
SDN1
CRISPR/Cas
University of Missouri, USA
Vietnam Academy of Science and Technology, Vietnam
Reduced raffinose family oligosaccharide (RFO) levels in seeds. Human and other monogastric animals cannot digest major soluble carbohydrates, RFOs.
( Le et al., 2020 )
SDN1
CRISPR/Cas
Vietnam Academy of Science and Technology, Vietnam
University of Missouri, USA
Leibniz Institute of Plant Genetics and Crop Plant Research
Germany
High oleic acid, low linoleic content.
( al Amin et al., 2019 )
SDN1
CRISPR/Cas
Jilin Agricultural University, China
Low polyunsaturated fats content. Soybean oil is high in polyunsaturated fats and is often partially hydrogenated. The trans-fatty acids produced through hydrogenation pose a health threat.
( Haun et al., 2014 )
SDN1
TALENs
Cellectis plant sciences Inc., USA
High oleic and low linolenic oil to improve nutritional characteristics, increase shelf-life and frying stability.
( Demorest et al., 2016 )
SDN1
TALENs
Cellectis plant science Inc.
Calyxt, USA
Reduction of harmful ingredients: toxic steroidal glycoalkaloids (SGAs).
(Sawai et al., 2014)
SDN1
TALENs
RIKEN Center for Sustainable Resource Science
Chiba University, Japan
Reduced amount of saturated fatty acids (FA) in soybean seeds for nutrititional improvement. FA are linked to cardiovascular diseases.
( Ma et al., 2021 )
SDN1
CRISPR/Cas
Zhejiang University, China
La Trobe University, Australia
Complete abolition of glycoalkaloids, causing a bitter taste and toxic to various organisms.
( Nakayasu et al., 2018 )
SDN1
CRISPR/Cas
Kobe University, Japan
Starch with an increased amylose ratio and elongated amylopectin chains. In food products, high amylose content and long amylopectin chains contribute to a low glycaemic index (GI) after intake, playing a role in health benefits.
( Zhao et al., 2021 )
SDN1
CRISPR/Cas
Swedish University of Agricultural Sciences, Sweden
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
Laboratorio de Agrobiotecnología (INTA), Argentina
Reduction of steroidal glycoalkaloids (SGAs). SGAs in most potato tissues are toxic to humans when the fresh weight is over 200mg/kg. High SGAs content also damage the quality of potato tubers.
( Zheng et al., 2021 )
SDN1
CRISPR/Cas
Qinghai University, China
Improved starch quality by reducing the levels of amylose, thus increasing the amylopectin content.
( Ali et al., 2023 )
SDN1
CRISPR/Cas
Agricultural Genetic Engineering Research Institute (AGERI)
Ain Shams University Faculty of Agriculture, Egypt
High levels of monounsaturated fatty acids (MUFAs) in soybean seed oil. High MUFA content in vegetable oils can lead to significant health benefits and improve the oxidative stability, which are essential for both food usage and biodiesel (and other renewable resource) synthesis.
( Li et al., 2023 )
SDN1
CRISPR/Cas
Northeast Agricultural University, China
Reduced content of trypsin inhibitors, one of the most abundant anti-nutritional factors in soybean seeds. Reduction of trypsin inhibitors leads to improved. digestibility of soybean meal.
( Wang et al., 2023 )
SDN1
CRISPR/Cas
Virginia Tech, USA
Reduced levels of phytic acid (PA). PA has adverse effects on essential mineral absorption and thus is considered as an anti-nutritive for monogastric animals.
( Krishnan et al., 2023 )
SDN1
CRISPR/Cas
ICAR-Indian Agricultural Research Institute (IARI)
Bharathidasan University, India
Amylose-free tubers.
( Abeuova et al., 2023 )
SDN1
CRISPR/Cas
National Center for Biotechnology (NCB)
L.N. Gumilyov Eurasian National University
Nazarbayev University, Kazakhstan
Improved fatty acid content: high oleic acid, decreased linoleic acid content to improve nutritional characteristics, increase shelf-life and frying stability.
(Zhang et al., 2023)
SDN1
CRISPR/Cas
Jilin Agricultural University, China
Reduced content of anti-nutritional factors in soybean seeds, leading to improved digestibility.
( Figliano et al., 2023 )
SDN1
CRISPR/Cas
UEL - Universidade Estadual de Londrina, Portugal
Decreased storage-proteins, which allows improved forein protein production in seed.
( Ha et al., 2023 )
SDN1
CRISPR/Cas
Dong-A University
Korea

Traits related to increased plant yield and growth

Improved high-density yield and drought/osmotic stress tolerance.
( Chen et al., 2020 )
SDN1
CRISPR/Cas
Chinese Academy of Agricultural Sciences
Shanxi Academy of Agricultural Sciences, China
Texas Tech University, USA
Regulate shade avoidance. Soybean displays the classic shade avoidance syndrome (SAS), which leads to yield reduction and lodging under density farming conditions.
( Lyu et al., 2020 )
SDN1
CRISPR/Cas
Chinese Academy of Agricultural Sciences
Jilin Agricultural University
Shandong Agricultural University
Northeast Agricultural University, China
Increasing the number of seeds per pod (NSPP), an important yield determinant.
( Cai et al., 2021 )
SDN1
CRISPR/Cas
South China Agricultural University, China
Control flowering time, an important determinant for soybean yield and adaptation.
( Li et al., 2020 )
SDN1
CRISPR/Cas
Chinese Academy of Sciences
University of Chinese Academy of Sciences
Guangzhou University
Agronomy College of Heilongjiang Bayi Agricultural University
Nanjing Agricultural University
Heilongjiang Academy of Agricultural Sciences, China
Late flowering. Photoperiod sensitivity limits geographical range of cultivation.
( Cai et al., 2017 )
SDN1
CRISPR/Cas
Chinese Academy of Agricultural Sciences, China
Enhanced photosynthesis and increases seed yield.
( Hu et al., 2022 )
SDN1
CRISPR/Cas
Nanjing Agricultural University
Chinese Academy of Sciences
Henan Institute of Science and Technology, China
Compact architecture with a smaller petiole angle than wild-type plants.
( Zhang et al., 2022 )
SDN1
CRISPR/Cas
Fujian Agriculture and Forestry University
Beijing Vocational College of Agriculture
Xiamen University, China
Altered plant architecture to inrease yield: increased node number on the main stem and branch number.
(Bao et al., 2019)
SDN1
CRISPR/Cas
Chinese Academy of Agricultural Sciences
Huazhong Agricultural University, China
Duy Tan University, Vietnam
RIKEN Center for Sustainable Resource Science, Japan
Increased nodule numbers. Soybean is a globally important crop for oil production and protein for human diet.
( Bai et al., 2019 )
SDN1
CRISPR/Cas
Fujian Agriculture and Forestry University
Nanchang University, China
Overexpression causes strongly promoted stem elongation, lower expression resulted in dwarf phenotype.
( Mu et al., 2022 )
SDN1
CRISPR/Cas
Chinese Academy of Agricultural Sciences, China
Enhanced performance of soybean under dense conditions.
( Ji et al., 2022 )
SDN1
CRISPR/Cas
Academy of Agricultural Sciences
Southern University of Science and Technology, China
Promoting nodulation: up-regulation of expression levels of genes involved in nodulation. Nitrogen-fixing symbiotic nodules strongly up regulate yield.
(Wang et al., 2022)
SDN1
CRISPR/Cas
Beijing Institute of Technology
Chinese Academy of Agricultural Sciences, China
Improved pod shattering resistance. Pod shattering has been a negatively selected trait in soybean domestication and breeding as it can lead to devastating yield loss of soybean.
( Zhang et al., 2022 )
SDN1
CRISPR/Cas
Fujian Agriculture and Forestry University
Heilongjiang Bayi Agricultural University
Hebei Academy of Agricultural and Forestry Sciences, China
Reduction of soybean plant height and shortening of the internodes. The height of the soybean plant is a key trait that significantly impacts the yield.
( Cheng et al., 2019 )
SDN1
CRISPR/Cas
Guangzhou University
Chinese Academy of Sciences
University of Chinese Academy of Sciences, China
Control flowering time, an important determinant for soybean yield and adaptation.
( Wang et al., 2023 )
SDN1
CRISPR/Cas
Guangzhou University
Yunnan Agricultural University
Nanjing Agricultural University
Key Laboratory of Crop Genetics and Breeding of Hebei, China
Altered plant architecture to increase yield: more compact plant architecture.
(Kong et al., 2023)
SDN1
CRISPR/Cas
Nanjing Agricultural University
Chinese Academy of Agricultural Sciences
Hebei Academy of Agricultural and Forestry Sciences, China
Increases size of starch granules. Granule size is a key parameter for industrial processing. Larger granules may increase yield during processing and it has been shown in sweet potato that smaller starch granules degrade faster than large granules, so larger granule tubers may be beneficial for storage.
( Pfotenhauer et al., 2023 )
SDN1
CRISPR/Cas
University of Tennessee, USA
Shorter flowering time and increased yield.
( Cheng et al., 2023 )
SDN1
CRISPR/Cas
Jilin Normal University
Jilin Academy of Agricultural Sciences, China
Increased plant height, longer roots, smaller root growth angle and increased tuber weight.
( Zhao et al., 2024 )
SDN1
CRISPR/Cas
Yunnan Agricultural University
Chinese Academy of Sciences
Xuanhan County Plant Quarantine Station
Yuguopu District Agricultural Comprehensive Service Center
Ning'
er County Plant Protection and Plant Quarantine Station, China
Shortened flowering time and maturity, determining their favourable latitudinal zone for cultivation.
( Gao et al., 2024 )
SDN1
CRISPR/Cas
Syngenta Biotechnology (China) Co., Ltd
Syngenta Seed Technology China Co., Ltd, China

Traits related to industrial utilization

Generation of male sterility lines. Heterosis, the breeding result in which heterozygous hybrid progeny are superior to both homozygous parents, depends on the selection and application of male-sterile lines (MSL). Using MSL can reduce the production cost of hybrid seeds and improve its quality.
( Chen et al., 2021 )
SDN1
CRISPR/Cas
Chinese Academy of Sciences
University of Chinese Academy of Sciences
Jilin Agricultural University
Jilin Academy of Agricultural Sciences, China
Control photoperiodic flowering to allow adaptation of cultivars. Flowering time is a critical characteristic to determine the geographic distribution and regional adaptability of soybean.
( Wang et al., 2020 )
SDN1
CRISPR/Cas
Chinese Academy of Agricultural Sciences, China
Generate self-compatible diploid potato lines for the application of efficient breeding methods.
( Enciso-Rodriguez et al., 2021 )
SDN1
CRISPR/Cas
Michigan State University, USA
Generate self-compatible diploid potato lines for the application of efficient breeding methods.
( Eggers et al., 2021 )
SDN3
CRISPR/Cas
Solynta
Wageningen University &
Research, The Netherlands
Confer male and female sterility to prevent the risk of trasgene flow from transgenic plants to their wild relatives.
( Wu et al., 2024 )
SDN1
CRISPR/Cas
Chinese Academy of Sciences
University of Chinese Academy of Sciences
Jilin Agricultural University
Zhejiang Lab, China

Traits related to herbicide tolerance

Chlorsulfuron
( Li et al., 2015 )
SDN2
CRISPR/Cas
DuPont Pioneer Agricultural Biotechnology, USA
Imidizolinone
( Butler et al., 2016 )
SDN2
CRISPR/Cas
Michigan State University
University of Minnesota, USA
Imidizolinone
( Butler et al., 2016 )
SDN2
TALENs
Michigan State University
University of Minnesota, USA
Chlorsulfuron
( Veillet et al., 2019 )

BE
Université Rennes 1
INRA PACA
Université Paris-Saclay, France
Herbicide tolerance: resistance to AHAS-inhibiting herbicides.
(Wei et al., 2023)

BE
Nankai University
China Agricultural University, China

Traits related to product color/flavour

Albino phenotype.
( Syombua et al., 2021 )
SDN1
CRISPR/Cas
International Institute of Tropical Agriculture (IITA)
University of Nairobi, Kenya
University of Missouri
Iowa State University
Donald Danforth Plant Science Center, USA
Albino phenotype
( Bánfalvi et al., 2020 )
SDN1
CRISPR/Cas
NARIC Agricultural Biotechnology Institute, Hungary
Brown seed-coat color.
( Jia et al., 2020 )
SDN1
CRISPR/Cas
Southern University of Science and Technology
Chinese Academy of Agricultural Sciences
South China Agricultural University, China
Donald Danforth Plant Science Center
University of Missouri, USA
Alleviated browning of freshly cut potatoes.
( Shi et al., 2023 )
SDN1
CRISPR/Cas
Shandong Agricultural University, China

Traits related to storage performance

Improved cold storage and processing traits: reduced levels of acrylamide, reduced sugars.
(Clasen et al., 2017)
SDN1
TALENs
Cellectis Plant Science, USA
Reduced enzymatic browning. The formation of dark-colored precipitates in fruits and vegetables causes undesirable changes in organoleptic properties and the loss of nutritional quality.
( Gonzalez et al., 2020 )
SDN1
CRISPR/Cas
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
Laboratorio de Agrobiotecnología (INTA)
Universidad Nacional de Mar del Plata, Argentina
Swedish University of Agricultural Sciences, Sweden
Decreased cold-induced sweetening of the potato tubers.
Cold-storage causes undesired sweetening which reduces the quality and the commercial value of the tubers.
( Hassan et al., 2023 )
SDN1
CRISPR/Cas
Agricultural Genetic Engineering Research Institute - Agricultural Research Center
Ain Shams University, Egypt