Abbreviation

AAV	Adeno-associated virus, e.g. AAV2, AAV5, AAV2/5 indicates virus containing the genome of serotype 2 packaged in the capsid from serotype 5
ABE	Adenine base editor
Ad	Adenovirus
Cas9	CRISPR associated protein 9
CBE	Cytosine base editor
CRISPR	Clustered regularly interspaced short palindromic repeats
Gc	Genome copies
HIV	Human immunodeficiency virus
HSV	Herpes simplex virus
LNP	Lipid nanoparticle
LV	Lentivirus
MRNA	Messenger ribonucleic acid
ODD	Orphan Drug Designation
PFU	Plaque forming units
RMAT	Regenerative Medicine Advanced Therapy
RNP	Ribonucleoprotein
RPDD	Rare Pediatric Disease Designation
RV	Retrovirus
START	Support for Clinical Trials Advancing Rare Disease Therapeutics
Vg	Vector genomes
VSV-G	Vesicular stomatitis virus G

Delivery Type

Electroporation	Cell membrane permeablized by electrical field to allow gene therapy to enter the cell
Lipid encapsulation	Any lipid nanoparticle used to deliver editor, corrected gene
Microinjection	Drug is injected into individual cells
Plasmid	Any plasmid used to deliver editor, corrected gene
Viral transduction	Any virus used to deliver editor, corrected gene, etc.

FDA Designation

Accelerated Approval	These regulations allowed drugs for serious conditions that filled an unmet medical need to be approved based on a surrogate endpoint
Breakthrough Therapy	A process designed to expedite the development and review of drugs which may demonstrate substantial improvement over available therapy.
Fast Track	Fast track is a process designed to facilitate the development, and expedite the review of drugs to treat serious conditions and fill an unmet medical need
Orphan Drug	This designation is for drugs intended to treat rare diseases or conditions that affect a small number of people, offering incentives like tax credits and market exclusivity
Priority Review	A Priority Review designation means FDA’s goal is to take action on an application within 6 months.
Rare Pediatric Disease	The rare pediatric disease PRV program aims to incentivize drug development for rare pediatric diseases.
Regenerative Medicine Advanced Therapy	Facilitates the development and expedites the review of regenerative medicine therapies, including cell therapies, therapeutic tissue engineering products, and human cell and tissue products, for serious or life-threatening conditions.
Support for Clinical Trials Advancing Rare Disease Therapeutics	(START) Pilot Program is a program designed to accelerate the development of novel drug and biological products for rare diseases by providing sponsors with enhanced communication and guidance from FDA staff.

Funder Type

Industry	All for-profit entities
NIH	U.S. National Institutes of Health
Other Non-Profit	Includes individuals, universities, community-based organizations

Route Of Administration

CED	Convection enhanced delivery to the brain
Inhalational	Delivered to the lungs in the form of a fine spray
Intraarterial	Into the lumen of an artery
Intraarticular	Into a joint space
Intracerebroventricular	Into the ventricles of the brain (ICV)
Intracisterna magna	Into the cisterna magna of the brain
Intracochlear	Into the cochlea of the ear
Intradermal	Into the dermal layer of the skin
Intragastric	Into the stomach
Intramuscular	Into a skeletal muscle
Intraocular	Administered into the eye
Intraparenchymal	Into the brain
Intraperitoneal	Into the peritoneal cavity
Intrastromal	Into the stroma of the cornea
Intrathecal	Into the spinal canal
Intravenous	Into a vein
Intravesicular	Into the bladder
Intravitreal	Into the eye (IVT)
Subcutaneous	Under the skin
Subretinal	Under the sensory retina
Suprachoroidal	Into the suprachoroidal space between the sclera and the choroid of the eye
Topical	Applied to the outer layer of the skin

Stages

Early Phase I	Describes exploratory trials conducted before traditional Phase I trials to investigate how or whether a drug affects the body, have no therapeutic or diagnostic goals
Phase I	Describes clinical trials that focus on the safety of a drug
Phase II	Describes clinical trials that gather preliminary data on effectiveness, continue to monitor safety
Phase I/II	Combination Phase I/Phase II clinical trial
Phase III	Pivotal experiments to gather data on safety and effectiveness
Phase II/III	Combination Phase II/Phase III clinical trial

Study Status

Active, Not Recruiting	Study has ongoing, but is not enrolling new participants
Completed	Study has concluded normally
Not Yet Recruiting	Study has not started enrollment
Recruiting	Study is actively looking for participants
Suspended	Study halted prematurely but has the potential to resume
Terminated	Study was halted prematurely and will not resume, participants are no longer recieving intervention
Unknown	Study has passed its completion date, but last known status was not listed as Completed, Terminated or Withdrawn. Status has not been verified within the past 2 years. Studies with an unknown status are considered closed studies

Table Column Header

Actual Study Start Date (m/d/y)	The actual date on which the first participant was enrolled in a clinical study
Adult/Pediatric/Both	Variable on whether trial accepts patients who are adults, pediatric (<18 years of age) or both
Ages Eligible for Study	More specific age ranges eligible for the study
Clinical Centers in USA?	Binary variable on whether trial sites are located in the USA (Y) or not (N)
Clinical Publications	URL connections to clinical data on human subjects
Compound Name	The interventional compound given to the study subjects
Countries	List of countries that contain at least 1 clinical trial site
Current Stage	The stage of the clinical trial, determined based on the studies' objective
Date of Last Update	The most recent date on which changes to a study record were made available on ClinicalTrials.gov
Delivery System	Describes the nature of the drug substance or process that is used to deliver the editor or corrected gene
Development Status	Indicates whether or not the clinical development program is ongoing, or if the drug is approved
Dose levels (up to 5)	List of doses given in the indicated clinical trial, may be expressed in specific units, or a range of possible doses
Drug Product Type	Describes the nature of the drug product
Editor Type	For gene editing type therapies, the protein that will perform the gene correction
Estimated Primary Completion Date (m/d/y)	The anticipated date that the primary outcome measure data will be complete (last participant data collected)
FDA Designations	List of special FDA designations granted to the Sponsor for the development program (i.e. Orphan Drug Designation, Fast Track, Rare Pediatric Disease Designation, RMAT, etc.)
Funder Type	Describes the organization that provides support for the clinical study
Grants	URL connections to funding used to conduct preclinical or clinical studies, granted by NIH or other US institution
Has US IND?	Binary variable indicating whether the drug product is regulated by an approved Investigational New Drug application by the Food and Drug Administration of the United States
Indication	The disease, disorder, syndrome, illness, or injury that is being studied
Locations	List of countries that contain at least 1 clinical trial site
Mechanism of Action	Simplified description of how the drug product works
NCT Number	Unique identification code given to each clinical study upon registration at ClinicalTrials.gov
News and Press Releases	URL connections to press releases generated by drug product Sponsor
N trial sites	Number of clinical sites where the clinical trial is conducted
Patents	URL connections to patents, intellectual property related to the drug product
Phases	The stage of the clinical trial, determined based on the studies' objective
Preclinical Publications	URL connections to preclinical data (in vitro, animal data)
Protocols	URL connections to clinical trial protocols, study design papers
Recent Regulatory Updates	News, updates on recent or anticipated regulatory milestones
Recruitment Status	Indicates the current recruitment status or the expanded access status
Results Posted	Indicates if summary results are posted to the clinical trial record
Route of Administration	How the drug product is introduced to the body
Sexes Eligible for Study	A type of eligibility criteria that indicates the sex of people who may participate in a clinical study (all, female, male)
Sponsor	The organization or person who initiates the study and who has authority and control over the study
Sponsor Class	Describes the organization that provides support for the clinical study
Standard Ages	Variable on whether trial accepts patients who are adults, pediatric (<18 years of age) or both
Target Gene or Variant	The symbol of the gene that is corrected or replaced by the drug compound
Target Tissue or Cell	Lists target cells if the therapy is directed at a particular cell type (either by ex-vivo enrichment, or tissue-specific regulatory elements)
Therapy Route	Describes whether the gene therapy is introduced to cells in-vivo or ex-vivo
Therapy Type	Describes the nature of the gene therapy
Trial Enrollment	Number of study subjects planned or actually enrolled in the study
Vector Type	Gives additional specifics (if known) about delivery system (e.g. AAV serotype)

Therapy Route

Ex-vivo	When the cells are modified outside the body
In-vivo	When the cells are modified inside the body

Therapy Type

Gene editing	A gene therapy where disease-causing variant is corrected via a gene editor
Recent Regulatory Updates	A gene therapy where a corrected gene is administered to relevant cells/tissues via a delivery system