Gene Human Homo sapiens

FCER1A

Fc epsilon receptor Ia

gene with protein product

Human FCER1AMouseRat

Reading the ortholog votes for mouse and rat.

Location: Cytogenetic band 1q23.2NCBI: 1:159,283,575-159,308,202 on the plus strand, GRCh38.p14 (GCF_000001405.40), sequence NC_000001.11, annotation GCF_000001405.40-RS_2025_08 of 2025-08-01Ensembl: 1:159,289,714-159,308,224 on the plus strand, GRCh38.p14 (GCA_000001405.29), release 116Coordinates are one-based with both ends included, as each source reports them.
Also known as: FcepsilonRIalpha, FCERIA
Previous symbols: FCE1A

Gene identity, from HGNC · HGNC 2026-10-02 · read 2026-10-02 ET · HGNC:3609

Notes from the sources

NCBI places this gene on more than one sequence of GRCh38.p14 (1 NC_000001.11, 1 NW_025791759.1); the coordinates shown are the 1 placement

Silence this gene

The order page opens with FCER1A and human filled in. The sequences are designed against the transcripts below; the price is on that page.

Order for FCER1A

sdASO, toASO or siRNA, chosen on the next page

Bring your own sequence Transcripts

For research use only. Not for use in diagnostic or therapeutic procedures.

Summary
Transcripts
Expression
Protein
Interactions
Pathways
Disease
Variants
Constraint
Orthologs
MicroRNAs
Long non-coding RNAs
Literature
Silencing this gene

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01 Summary and function

What FCER1A does

The immunoglobulin epsilon receptor (IgE receptor) is the initiator of the…

NCBI Gene summary

Ready in a moment

02 Transcripts and isoforms

The RNA a design targets

Reading NCBI Datasets and Ensembl.Still reading. A first read of a gene can take a while; this page waits up to 80 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

Ready in a moment

03 Expression by tissue

Where FCER1A is expressed

Reading GTEx and the Human Protein Atlas.Still reading. A first read of a gene can take a while; this page waits up to 80 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

Ready in a moment

04 Protein

The protein FCER1A encodes

Reading UniProt, InterPro, AlphaFold DB and PDBe.Still reading. A first read of a gene can take a while; this page waits up to 80 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

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05 Interactions

Proteins STRING associates with FCER1A

Reading STRING.Still reading. A first read of a gene can take a while; this page waits up to 50 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

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06 Pathways

Where FCER1A acts, as Reactome curates it

Reading UniProt and Reactome.Still reading. A first read of a gene can take a while; this page waits up to 60 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

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07 Disease associations

Diseases linked to FCER1A

Reading Open Targets and ClinGen.Still reading. A first read of a gene can take a while; this page waits up to 105 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

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08 Variants

Classified variants of FCER1A

Reading ClinVar.Still reading. A first read of a gene can take a while; this page waits up to 60 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

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09 Constraint

How much variation FCER1A tolerates

Reading gnomAD and Open Targets.Still reading. A first read of a gene can take a while; this page waits up to 45 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

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10 Orthologs

The same gene in mouse, rat and human

Reading the Alliance, NCBI, Ensembl Compara and RGD.Still reading. A first read of a gene can take a while; this page waits up to 145 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

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11 MicroRNAs

MicroRNAs hosted within FCER1A

Reading Ensembl and miRBase.Still reading. A first read of a gene can take a while; this page waits up to 110 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

Ready in a moment

12 Long non-coding RNAs

Long non-coding RNAs at the FCER1A locus

Reading Ensembl.Still reading. A first read of a gene can take a while; this page waits up to 110 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

Ready in a moment

13 Literature

Papers that mention FCER1A

Reading Europe PMC.Still reading. A first read of a gene can take a while; this page waits up to 55 seconds for it, and its scripts then bring in this line, or a line saying what did not arrive.

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14 Silencing this gene

From FCER1A to a sequence that silences it

The AUMsilence platform designs the sequences against the human transcripts on this page. Six decisions are yours before it does. What is written under each is AUM's guidance; the timings and the concentrations are in the usage guide below.

01
Choose the region
A knockdown oligonucleotide can sit in the 5' untranslated region, the coding sequence or the 3' untranslated region, and all three are used. The coding sequence and the 3' untranslated region are the usual first choices for an RNase H design; the 5' end near the start codon suits a steric block. The map above shows where each region sits on the isoforms it draws.
02
Cover the isoforms you mean
An exon every isoform carries silences the whole gene; an exon only some isoforms carry silences those and spares the rest. Decide which you want before a sequence is chosen, and check the reference transcript (MANE Select in human; RefSeq Select and Ensembl canonical in mouse and rat) is the one your cells express.
03
Think across species early
The orthologs panel says whether mouse and rat carry the same gene. Whether one oligonucleotide can serve two species is a sequence question, settled at design by matching the candidate against each transcript, not by the protein identity shown there.
04
Check expression in your model
A transcript that is not expressed in your cells cannot show knockdown. Confirm the gene is expressed in the cell type and condition you will use, from your own data or a reference atlas, before the order. The expression panel above gives GTEx's median per tissue for a human gene; for mouse and rat it says that no atlas is on this page yet.
05
Run the controls
A scramble control of the same chemistry, a positive control against a gene known to knock down in your cells, untreated cells, and a mock condition where a transfection reagent is used. Read knockdown at the RNA level first, then at the protein; the usage guide gives the timing and the concentrations to start from.
06
Pick the product
AUMsilence sdASO needs no transfection reagent and works in the cells that resist one. AUMsilence toASO is the transfection-optimised version of the same design, and AUMsiRNA is the siRNA route. The selection guide compares them.

Order for FCER1A Bring your own sequence The usage guide Selection guide

For research use only. Not for use in diagnostic or therapeutic procedures.

Gene Human Homo sapiens

FCER1A

Reading the record for FCER1A from HGNC, NCBI Gene and Ensembl.Still reading. A first read of a gene can take a while; this page waits up to 115 seconds for it, and its scripts then bring in the page, or a line saying what did not arrive.

The full name, the identifiers, the location and the notes from the sources arrive with the record. Nothing is filled in ahead of it.

Order door

The door to order for FCER1A opens with the record, which decides which product it carries. The order page itself is open now.

Bring your own sequence

For research use only. Not for use in diagnostic or therapeutic procedures.

This page is still reading the record. Its scripts replace this shell with the record when it arrives; with scripts off, it stays at this shell however long you wait.

01 Summary and function

What FCER1A does

Waiting for the record before reading NCBI Gene and UniProt.

02 Transcripts and isoforms

The RNA a design targets

Waiting for the record before reading NCBI Datasets and Ensembl.

03 Expression by tissue

Where FCER1A is expressed

Waiting for the record before reading GTEx and the Human Protein Atlas.

04 Protein

The protein FCER1A encodes

Waiting for the record before reading UniProt, InterPro, AlphaFold DB and PDBe.

05 Interactions

Proteins STRING associates with FCER1A

Waiting for the record before reading STRING.

06 Pathways

Where FCER1A acts, as Reactome curates it

Waiting for the record before reading UniProt and Reactome.

07 Disease associations

Diseases linked to FCER1A

Waiting for the record before reading Open Targets and ClinGen.

08 Variants

Classified variants of FCER1A

Waiting for the record before reading ClinVar.

09 Constraint

How much variation FCER1A tolerates

Waiting for the record before reading gnomAD and Open Targets.

10 Orthologs

The same gene in mouse, rat and human

Waiting for the record before reading the Alliance, NCBI, Ensembl Compara and RGD.

11 MicroRNAs

MicroRNAs hosted within FCER1A

Waiting for the record before reading Ensembl and miRBase.

12 Long non-coding RNAs

Long non-coding RNAs at the FCER1A locus

Waiting for the record before reading Ensembl.

13 Literature

Papers that mention FCER1A

Waiting for the record before reading Europe PMC.

Accession	Name	Biotype	Labels	Exons	Spliced length	Protein	Sequence
NM_001387280.1matches ENST00000693622.1 NCBI also places this transcript on 1 NW_025791759.1 in this annotation, with 5 exons; only the 1 placement is drawn	transcript variant 1	protein coding	MANE Select	5	1,073 nt	257 aaNP_001374209.1	Ready in a moment
NM_002001.4 NCBI also places this transcript on 1 NW_025791759.1 in this annotation, with 7 exons; only the 1 placement is drawn	transcript variant 4	protein coding	none	7	1,463 nt	257 aaNP_001992.1	Ready in a moment
NM_001387282.1matches ENST00000368114.2 NCBI also places this transcript on 1 NW_025791759.1 in this annotation, with 5 exons; only the 1 placement is drawn	transcript variant 2	protein coding	Ready in a moment

Accession	Name	Biotype	Labels	Exons	Spliced length	Protein	Sequence
NM_001387280.1matches ENST00000693622.1 NCBI also places this transcript on 1 NW_025791759.1 in this annotation, with 5 exons; only the 1 placement is drawn	transcript variant 1	protein coding	MANE Select	5	1,073 nt	257 aaNP_001374209.1	Ready in a moment
NM_002001.4 NCBI also places this transcript on 1 NW_025791759.1 in this annotation, with 7 exons; only the 1 placement is drawn	transcript variant 4	protein coding	none	7	1,463 nt	257 aaNP_001992.1	Ready in a moment
NM_001387282.1matches ENST00000368114.2 NCBI also places this transcript on 1 NW_025791759.1 in this annotation, with 5 exons; only the 1 placement is drawn	transcript variant 2	protein coding	Ready in a moment

Accession	Name	Biotype	Labels	Exons	Spliced length	Protein	Sequence
ENST00000693622.1matches NM_001387280.1	FCER1A-203	protein coding	MANE SelectEnsembl canonical	5	1,073 nt	257 aaENSP00000509626.1	Ready in a moment
ENST00000368115.5	FCER1A-202	protein coding	none	6	1,165 nt	257 aaENSP00000357097.1	Ready in a moment
ENST00001142248.1	FCER1A-204	protein coding	none	5	1,109 nt	257 aaENSP00000815607.1	Ready in a moment
ENST00000368114.2	FCER1A-201	protein coding	none	5	1,010 nt	224 aaENSP00000357096.1	Ready in a moment

FCER1A

What FCER1A does

The RNA a design targets

Where FCER1A is expressed

The protein FCER1A encodes

Proteins STRING associates with FCER1A

Where FCER1A acts, as Reactome curates it

Diseases linked to FCER1A

Classified variants of FCER1A

How much variation FCER1A tolerates

The same gene in mouse, rat and human

MicroRNAs hosted within FCER1A

Long non-coding RNAs at the FCER1A locus

Papers that mention FCER1A

From FCER1A to a sequence that silences it

Choose the region

Cover the isoforms you mean

Think across species early

Check expression in your model

Run the controls

Pick the product

FCER1A

What FCER1A does

The RNA a design targets

Where FCER1A is expressed

The protein FCER1A encodes

Proteins STRING associates with FCER1A

Where FCER1A acts, as Reactome curates it

Diseases linked to FCER1A

Classified variants of FCER1A

How much variation FCER1A tolerates

The same gene in mouse, rat and human

MicroRNAs hosted within FCER1A

Long non-coding RNAs at the FCER1A locus

Papers that mention FCER1A

FCER1A

What FCER1A does

Gene summary

Protein function

The RNA a design targets

RefSeq 4 transcripts

A window on one transcript

Ensembl 4 transcripts

A window on one transcript

Where FCER1A is expressed

The protein FCER1A encodes

Proteins STRING associates with FCER1A

Where FCER1A acts, as Reactome curates it

Diseases linked to FCER1A

Classified variants of FCER1A

How much variation FCER1A tolerates

The same gene in mouse, rat and human

MicroRNAs hosted within FCER1A

Long non-coding RNAs at the FCER1A locus

Papers that mention FCER1A

From FCER1A to a sequence that silences it

Choose the region

Cover the isoforms you mean

Think across species early

Check expression in your model

Run the controls

Pick the product

Gene summary

Protein function

RefSeq 4 transcripts

A window on one transcript

Ensembl 4 transcripts

A window on one transcript