CN112313334A - 用以编辑血红蛋白相关突变的同源定向修复模板设计和递送 - Google Patents

用以编辑血红蛋白相关突变的同源定向修复模板设计和递送 Download PDF

Info

Publication number
CN112313334A
CN112313334A CN201980042235.8A CN201980042235A CN112313334A CN 112313334 A CN112313334 A CN 112313334A CN 201980042235 A CN201980042235 A CN 201980042235A CN 112313334 A CN112313334 A CN 112313334A
Authority
CN
China
Prior art keywords
cell
seq
cells
nucleic acid
nuclease
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201980042235.8A
Other languages
English (en)
Chinese (zh)
Inventor
戴维德·J·罗林斯
索姆亚·帕塔比
安德鲁·M·沙尔博格
凯尔·雅各比
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seattle Childrens Hospital
Original Assignee
Seattle Childrens Hospital
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seattle Childrens Hospital filed Critical Seattle Childrens Hospital
Publication of CN112313334A publication Critical patent/CN112313334A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09—Recombinant DNA-technology
    • C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/70—Carbohydrates; Sugars; Derivatives thereof
    • A61K31/7088—Compounds having three or more nucleosides or nucleotides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides
    • A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • A61K38/43—Enzymes; Proenzymes; Derivatives thereof
    • A61K38/46—Hydrolases (3)
    • A61K38/465—Hydrolases (3) acting on ester bonds (3.1), e.g. lipases, ribonucleases
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/10—Cellular immunotherapy characterised by the cell type used
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/40—Cellular immunotherapy characterised by antigens that are targeted or presented by cells of the immune system
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P7/00—Drugs for disorders of the blood or the extracellular fluid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/795—Porphyrin- or corrin-ring-containing peptides
    • C07K14/805—Haemoglobins; Myoglobins
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09—Recombinant DNA-technology
    • C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
    • C12N15/113—Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09—Recombinant DNA-technology
    • C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
    • C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
    • C12N15/85—Vectors or expression systems specially adapted for eukaryotic hosts for animal cells
    • C12N15/86—Viral vectors
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09—Recombinant DNA-technology
    • C12N15/87—Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation
    • C12N15/90—Stable introduction of foreign DNA into chromosome
    • C12N15/902—Stable introduction of foreign DNA into chromosome using homologous recombination
    • C12N15/907—Stable introduction of foreign DNA into chromosome using homologous recombination in mammalian cells
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14—Hydrolases (3)
    • C12N9/16—Hydrolases (3) acting on ester bonds (3.1)
    • C12N9/22—Ribonucleases [RNase]; Deoxyribonucleases [DNase]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2239/00—Indexing codes associated with cellular immunotherapy of group A61K40/00
    • A61K2239/31—Indexing codes associated with cellular immunotherapy of group A61K40/00 characterized by the route of administration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2239/00—Indexing codes associated with cellular immunotherapy of group A61K40/00
    • A61K2239/38—Indexing codes associated with cellular immunotherapy of group A61K40/00 characterised by the dose, timing or administration schedule
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K48/00—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N2310/00—Structure or type of the nucleic acid
    • C12N2310/10—Type of nucleic acid
    • C12N2310/20—Type of nucleic acid involving clustered regularly interspaced short palindromic repeats [CRISPR]
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N2320/00—Applications; Uses
    • C12N2320/30—Special therapeutic applications
    • C12N2320/32—Special delivery means, e.g. tissue-specific
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N2320/00—Applications; Uses
    • C12N2320/30—Special therapeutic applications
    • C12N2320/34—Allele or polymorphism specific uses
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N2330/00—Production
    • C12N2330/50—Biochemical production, i.e. in a transformed host cell
    • C12N2330/51—Specially adapted vectors
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N2750/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA ssDNA viruses
    • C12N2750/00011—Details
    • C12N2750/14011—Parvoviridae
    • C12N2750/14111—Dependovirus, e.g. adenoassociated viruses
    • C12N2750/14141—Use of virus, viral particle or viral elements as a vector
    • C12N2750/14143—Use of virus, viral particle or viral elements as a vector viral genome or elements thereof as genetic vector
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N2800/00—Nucleic acids vectors
    • C12N2800/80—Vectors containing sites for inducing double-stranded breaks, e.g. meganuclease restriction sites

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Biomedical Technology (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • Biotechnology (AREA)
  • General Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medicinal Chemistry (AREA)
  • Biophysics (AREA)
  • Microbiology (AREA)
  • Epidemiology (AREA)
  • Plant Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Cell Biology (AREA)
  • Mycology (AREA)
  • Hematology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Diabetes (AREA)
  • Immunology (AREA)
  • Virology (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Developmental Biology & Embryology (AREA)
CN201980042235.8A 2018-04-27 2019-04-24 用以编辑血红蛋白相关突变的同源定向修复模板设计和递送 Pending CN112313334A (zh)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201862663553P 2018-04-27 2018-04-27
US62/663,553 2018-04-27
US201962820521P 2019-03-19 2019-03-19
US62/820,521 2019-03-19
PCT/US2019/028861 WO2019209914A2 (en) 2018-04-27 2019-04-24 Homology-directed repair template design and delivery to edit hemoglobin-related mutations

Publications (1)

Publication Number Publication Date
CN112313334A true CN112313334A (zh) 2021-02-02

Family

ID=68295766

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201980042235.8A Pending CN112313334A (zh) 2018-04-27 2019-04-24 用以编辑血红蛋白相关突变的同源定向修复模板设计和递送

Country Status (7)

Country Link
US (1) US20210309995A1 (https=)
JP (1) JP2021521855A (https=)
KR (1) KR20210005179A (https=)
CN (1) CN112313334A (https=)
AU (1) AU2019261387A1 (https=)
CA (1) CA3106812A1 (https=)
WO (1) WO2019209914A2 (https=)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109486814A (zh) * 2017-10-31 2019-03-19 广东赤萌医疗科技有限公司 一种用于修复HBB1基因点突变的gRNA、基因编辑系统、表达载体和基因编辑试剂盒
CN113174433A (zh) * 2021-04-22 2021-07-27 中南大学 一种基于Cas蛋白的检测方法
CN115232811A (zh) * 2021-06-28 2022-10-25 南京启真基因工程有限公司 用于构建hbb基因突变的镰刀型细胞贫血症模型猪核移植供体细胞的方法及应用

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11866726B2 (en) 2017-07-14 2024-01-09 Editas Medicine, Inc. Systems and methods for targeted integration and genome editing and detection thereof using integrated priming sites
US20220251566A1 (en) * 2019-06-26 2022-08-11 The Research Foundation For The State University Of New York Cells engineered for oligonucleotide delivery, and methods for making and using thereof
CN113186203B (zh) * 2020-02-13 2022-12-30 斯微(上海)生物科技股份有限公司 治疗或者预防冠状病毒病的疫苗试剂
IL297419B2 (en) 2020-04-22 2025-02-01 BioNTech SE Coronavirus vaccine
WO2022221319A2 (en) * 2021-04-12 2022-10-20 Graphite Bio, Inc. Methods and compositions for production of genetically modified primary cells
WO2022232839A1 (en) * 2021-04-30 2022-11-03 The Board Of Trustees Of The Leland Stanford Junior University Methods for improved production of primary cd34+ cells
WO2023275892A1 (en) * 2021-06-29 2023-01-05 Council Of Scientific & Industrial Research Engineered fncas9 and uses thereof
CA3225981A1 (en) * 2021-07-01 2023-01-05 Bluebird Bio, Inc. Methods
WO2023049458A1 (en) * 2021-09-24 2023-03-30 Maxcyte, Inc. A method of enhanced viral transduction using electroporation
US12186387B2 (en) 2021-11-29 2025-01-07 BioNTech SE Coronavirus vaccine
CN114848851A (zh) * 2022-04-29 2022-08-05 广州医科大学附属第三医院（广州重症孕产妇救治中心、广州柔济医院） 治疗β-地中海贫血的药物
WO2024002985A1 (en) 2022-06-26 2024-01-04 BioNTech SE Coronavirus vaccine
WO2025181336A1 (en) * 2024-03-01 2025-09-04 Cellectis Sa Compositions and methods for hbb-editing in hspc

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009013559A1 (en) * 2007-07-23 2009-01-29 Cellectis Meganuclease variants cleaving a dna target sequence from the human hemoglobin beta gene and uses thereof
EP3122880B1 (en) * 2014-03-26 2021-05-05 Editas Medicine, Inc. Crispr/cas-related methods and compositions for treating sickle cell disease
JP2018522249A (ja) * 2015-04-24 2018-08-09 エディタス・メディシン、インコーポレイテッド Ｃａｓ９分子／ガイドｒｎａ分子複合体の評価

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109486814A (zh) * 2017-10-31 2019-03-19 广东赤萌医疗科技有限公司 一种用于修复HBB1基因点突变的gRNA、基因编辑系统、表达载体和基因编辑试剂盒
CN113174433A (zh) * 2021-04-22 2021-07-27 中南大学 一种基于Cas蛋白的检测方法
CN113174433B (zh) * 2021-04-22 2024-03-26 苏州淦江生物技术有限公司 一种基于Cas蛋白的检测方法
CN115232811A (zh) * 2021-06-28 2022-10-25 南京启真基因工程有限公司 用于构建hbb基因突变的镰刀型细胞贫血症模型猪核移植供体细胞的方法及应用

Also Published As

Publication number Publication date
JP2021521855A (ja) 2021-08-30
US20210309995A1 (en) 2021-10-07
KR20210005179A (ko) 2021-01-13
WO2019209914A2 (en) 2019-10-31
AU2019261387A1 (en) 2020-11-19
WO2019209914A3 (en) 2020-01-16
CA3106812A1 (en) 2019-10-31
EP3784783A2 (en) 2021-03-03

Similar Documents

Publication Publication Date Title
CN112313334A (zh) 用以编辑血红蛋白相关突变的同源定向修复模板设计和递送
JP7601916B2 (ja) 蝸牛および前庭細胞に核酸を送達するための物質および方法
CN111344395B (zh) 产生经修饰的自然杀伤细胞的方法及使用方法
AU2016232146B2 (en) Optimized liver-specific expression systems for FVIII and FIX
AU2018347421B2 (en) Transgenic selection methods and compositions
AU2019257708B2 (en) Expression of human FOXP3 in gene edited T cells
AU2019261438B2 (en) Expression of FOXP3 in edited CD34+ cells
AU774643B2 (en) Compositions and methods for use in recombinational cloning of nucleic acids
KR20210151785A (ko) 비바이러스성 dna 벡터 및 fviii 치료제 발현을 위한 이의 용도
KR20180097631A (ko) 핵산을 와우 및 전정 세포에 전달하기 위한 물질 및 방법
AU2016343979A1 (en) Delivery of central nervous system targeting polynucleotides
CN115323000B (zh) 使用细胞分裂基因座控制细胞增殖的工具和方法
CN108136048A (zh) 左旋多巴的系统合成和调节
CN115768890A (zh) 通过分子和物理启动对t细胞免疫疗法的热控制
CN114008209A (zh) Aav介导的枫糖尿症(msud)基因疗法
AU2023328197A1 (en) Crispr-cas13 system and use thereof
CN117795086A (zh) 用于枫糖尿症(msud)中bcaa调节的基因疗法
CN115298307A (zh) 核酸调节元件的新组合及其方法和用途
CN110484565A (zh) 一种基于腺相关病毒载体改造的自杀基因系统及其应用
CN108159434B (zh) 一种基因载体及其用于治疗青光眼的基因治疗药物
HK40046220A (en) Homology-directed repair template design and delivery to edit hemoglobin-related mutations
TW202403048A (zh) 用於治療龐貝症之具有訊號肽修飾之以密碼子最佳化核酸編碼α-葡萄糖苷酶(GAA)之治療性腺相關病毒
RU2812852C2 (ru) Невирусные днк-векторы и варианты их применения для экспрессии терапевтического средства на основе фактора viii (fviii)
NL2027815B1 (en) Genomic integration
KR102712198B1 (ko) 재조합 발생이 최소화된 유전자치료 벡터, 상기 벡터를 포함하는 재조합 레트로바이러스 및 상기 재조합 레트로바이러스를 포함하는 암의 예방 또는 치료용 약학 조성물

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 40046220

Country of ref document: HK