TMEM240

gene
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Summary

TMEM240 (transmembrane protein 240, HGNC:25186) is a protein-coding gene on chromosome 1p36.33, encoding Transmembrane protein 240 (Q5SV17).

This gene encodes a transmembrane-domain containing protein found in the brain and cerebellum. Mutations in this gene result in spinocerebellar ataxia 21.

Source: NCBI Gene 339453 — RefSeq curated summary.

At a glance

  • Gene–disease (curated): spinocerebellar ataxia type 21 (Definitive, GenCC)
  • GWAS associations: 1
  • Clinical variants (ClinVar): 159 total — 3 pathogenic, 1 likely-pathogenic
  • Phenotypes (HPO): 41
  • MANE Select transcript: NM_001114748

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:25186
Approved symbolTMEM240
Nametransmembrane protein 240
Location1p36.33
Locus typegene with protein product
StatusApproved
Ensembl geneENSG00000205090
Ensembl biotypeprotein_coding
OMIM616101
Entrez339453

Gene structure

Transcript identifiers

Ensembl transcripts: 2 — 2 protein_coding

ENST00000378733, ENST00000624426

RefSeq mRNA: 1 — MANE Select: NM_001114748 NM_001114748

CCDS: CCDS44040

Canonical transcript exons

ENST00000378733 — 4 exons

ExonStartEnd
ENSE0000147855415347781535507
ENSE0000147855715402901540624
ENSE0000165811015355891535797
ENSE0000166110015396841539790

Expression profiles

Bgee: expression breadth ubiquitous, 129 present calls, max score 94.33.

FANTOM5 (CAGE): breadth broad, TPM avg 1.1881 / max 55.2992, expressed in 521 samples.

FANTOM5 promoters (2 alternative TSS)

Promoter IDTPM avgSamples expressed
97921.1083491
97910.079734

Top tissues by expression

133 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
right hemisphere of cerebellumUBERON:001489094.33gold quality
cerebellar hemisphereUBERON:000224593.49gold quality
cerebellumUBERON:000203793.44gold quality
cerebellar cortexUBERON:000212993.42gold quality
Brodmann (1909) area 9UBERON:001354091.66gold quality
right frontal lobeUBERON:000281091.16gold quality
dorsolateral prefrontal cortexUBERON:000983490.78gold quality
nucleus accumbensUBERON:000188290.68gold quality
primary visual cortexUBERON:000243690.38gold quality
cortical plateUBERON:000534390.20gold quality
putamenUBERON:000187490.16gold quality
superior frontal gyrusUBERON:000266189.62gold quality
anterior cingulate cortexUBERON:000983589.27gold quality
caudate nucleusUBERON:000187389.14gold quality
Ammon’s hornUBERON:000195488.44gold quality
temporal lobeUBERON:000187187.46gold quality
amygdalaUBERON:000187687.33gold quality
hypothalamusUBERON:000189885.62gold quality
brainUBERON:000095585.33gold quality
mucosa of stomachUBERON:000119984.15gold quality
substantia nigraUBERON:000203882.82gold quality
body of uterusUBERON:000985382.77gold quality
ganglionic eminenceUBERON:000402382.42gold quality
pituitary glandUBERON:000000782.39gold quality
muscle layer of sigmoid colonUBERON:003580582.39gold quality
esophagogastric junction muscularis propriaUBERON:003584182.25gold quality
adenohypophysisUBERON:000219682.16gold quality
lower esophagus muscularis layerUBERON:003583382.00gold quality
right ovaryUBERON:000211881.97gold quality
lower esophagusUBERON:001347381.95gold quality

Single-cell (SCXA)

Detected in 1 experiment(s), a significant marker in 0.

ExperimentMarker?Max mean expression
E-ANND-3no0.82

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

20 targeting TMEM240, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-340-5P100.0072.504437
HSA-MIR-453199.9969.703181
HSA-MIR-1213699.9872.815713
HSA-MIR-3065-3P99.8770.251407
HSA-MIR-129999.7771.242389
HSA-MIR-6752-3P99.7266.711587
HSA-MIR-6887-3P99.6667.831778
HSA-MIR-516B-5P99.5666.331495
HSA-MIR-888-3P99.5369.771057
HSA-MIR-4782-5P98.3569.331474
HSA-MIR-570698.3569.331463
HSA-MIR-6509-3P98.3267.331343
HSA-MIR-191397.0766.201417
HSA-MIR-27A-5P97.0165.63528
HSA-MIR-6762-5P96.5564.62972
HSA-MIR-6845-5P96.5564.65969
HSA-MIR-4640-3P94.5863.02263
HSA-MIR-10396A-3P93.9962.0694
HSA-MIR-10396B-3P93.9962.0694
HSA-MIR-425890.6862.19164

Literature-anchored findings (GeneRIF, showing 8)

  • A new locus for spinocerebellar ataxia (SCA21) maps to chromosome 7p21.3-p15.1. (PMID:12402269)
  • The causative mutation of spinocerebellar ataxia 21 is the transmembrane protein gene TMEM240 (PMID:25070513)
  • SCA21 is a multisystem disorder with substantial extra-cerebellar involvement, but cognitive impairment is not an obligatory feature of the disease. (PMID:30522958)
  • The TMEM240 Protein, Mutated in SCA21, Is Expressed in Purkinje Cells and Synaptic Terminals. (PMID:32002801)
  • Hypermethylation and decreased expression of TMEM240 are potential early-onset biomarkers for colorectal cancer detection, poor prognosis, and early recurrence prediction. (PMID:32398064)
  • Neural-specific distribution of transmembrane protein TMEM240 and formation of TMEM240-Body. (PMID:32535204)
  • Hypermethylation of TMEM240 predicts poor hormone therapy response and disease progression in breast cancer. (PMID:35715741)
  • Myoclonus and Dystonia as Recurrent Presenting Features in Patients with the SCA21-Associated TMEM240 p.Pro170Leu Variant. (PMID:38617829)

Cross-species orthologs

4 orthologs

OrganismSymbolGene ID
danio_reriotmem240aENSDARG00000087916
danio_reriotmem240bENSDARG00000090145
mus_musculusTmem240ENSMUSG00000084845
rattus_norvegicusTmem240ENSRNOG00000066137

Protein

Protein identifiers

Transmembrane protein 240Q5SV17 (reviewed: Q5SV17)

All UniProt accessions (2): A0A096LNN7, Q5SV17

UniProt curated annotations — full annotation on UniProt →

Subcellular location. Synapse. Cell membrane.

Disease relevance. Spinocerebellar ataxia 21 (SCA21) [MIM:607454] A form of spinocerebellar ataxia, a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to degeneration of the cerebellum with variable involvement of the brainstem and spinal cord. SCA21 is characterized by onset in the first decades of life of slowly progressive relatively mild cerebellar ataxia associated with slight extrapyramidal features predominant in older patients and cognitive impairment predominant in younger patients. The disease is caused by variants affecting the gene represented in this entry.

Similarity. Belongs to the TMEM240 family.

RefSeq proteins (1): NP_001108220* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR027947TMEM240Family

Pfam: PF15207

UniProt features (9 total): sequence variant 5, transmembrane region 2, chain 1, modified residue 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q5SV17-F158.480.00

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Post-translational modifications (1): 169

Function

Pathways and Gene Ontology

Reactome pathways

0 pathways

MSigDB gene sets: 79 (showing top): GOCC_EXCITATORY_SYNAPSE, GOCC_POSTSYNAPSE, GOCC_SYNAPSE, GOCC_POSTSYNAPTIC_MEMBRANE, GOCC_PLASMA_MEMBRANE_REGION, GOCC_SYNAPTIC_MEMBRANE, chr1p36, GOCC_PARALLEL_FIBER_TO_PURKINJE_CELL_SYNAPSE, GOCC_POSTSYNAPTIC_DENSITY_MEMBRANE, GOCC_GLUTAMATERGIC_SYNAPSE, GOCC_NEURON_TO_NEURON_SYNAPSE, GOCC_ASYMMETRIC_GLUTAMATERGIC_EXCITATORY_SYNAPSE, GOCC_POSTSYNAPTIC_SPECIALIZATION_MEMBRANE, IGLV5_37_TARGET_GENES, SNRNP70_TARGET_GENES

GO Biological Process (0):

GO Molecular Function (0):

GO Cellular Component (8): synaptic membrane (GO:0097060), parallel fiber to Purkinje cell synapse (GO:0098688), postsynaptic density membrane (GO:0098839), cerebellar climbing fiber to Purkinje cell synapse (GO:0150053), TMEM240-body (GO:0160045), plasma membrane (GO:0005886), membrane (GO:0016020), synapse (GO:0045202)

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
synapse1
plasma membrane region1
excitatory synapse1
postsynaptic density1
postsynaptic membrane1
postsynaptic specialization membrane1
asymmetric, glutamatergic, excitatory synapse1
intracellular membrane-bounded organelle1
membrane1
cell periphery1
cellular anatomical structure1
cell junction1

Protein interactions and networks

STRING

326 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
TMEM240ATXN10Q9UBB4577
TMEM240AFG3L2Q9Y4W6528
TMEM240FGF14Q92915480
TMEM240PRKCGP05129479
TMEM240SPTBN2O15020474
TMEM240KCNC3Q14003474
TMEM240KCND3Q9UK17473
TMEM240ATXN7O15265431
TMEM240PPP2R2BQ00005420
TMEM240ZFP64Q9NTW7419
TMEM240CACNA1AP78510398
TMEM240DAB1O75553396
TMEM240PLEKHG4Q58EX7393
TMEM240OPLAHO14841374
TMEM240ZNF836Q6ZNA1373

IntAct

0 interactions, top by confidence:

ESM2 similar proteins: A0A1B4XBI5, A0A482ASA5, A0MD34, A0MD35, A5PJ65, B2RWJ3, K9N7A1, O15258, O48670, O74512, O87787, O90305, P04135, P09175, P09298, P0C781, P0C782, P0C786, P0C787, P0DUR6, P22170, P24412, P27904, P28959, P28991, P30248, P33464, P36299, P37989, P68334, P84400, Q00138, Q00479, Q04565, Q04569, Q04582, Q08552, Q1KZ54, Q498C8, Q54753

Diamond homologs: B2RWJ3, Q5SV17

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

159 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic3
Likely pathogenic1
Uncertain significance77
Likely benign49
Benign16

Top pathogenic / likely-pathogenic (4)

Variant IDHGVSClassification
1341993GRCh37/hg19 1p36.33-36.23(chr1:834101-7930605)x1Pathogenic
161193NM_001114748.2(TMEM240):c.489C>G (p.Tyr163Ter)Pathogenic
3391839GRCh37/hg19 1p36.33-36.32(chr1:849467-3153423)x3Pathogenic
1027486NM_001114748.2(TMEM240):c.419T>A (p.Leu140Gln)Likely pathogenic

SpliceAI

734 predictions. Top by Δscore:

VariantEffectΔscore
1:1535504:CCAT:Cacceptor_gain0.9900
1:1535505:CATC:Cacceptor_gain0.9900
1:1535508:C:CCacceptor_gain0.9900
1:1535582:CACT:Cdonor_loss0.9900
1:1535583:ACTC:Adonor_loss0.9900
1:1535584:CT:Cdonor_loss0.9900
1:1535585:TCAC:Tdonor_loss0.9900
1:1535586:CAC:Cdonor_loss0.9900
1:1535587:A:ACdonor_gain0.9900
1:1535587:ACCGT:Adonor_loss0.9900
1:1535588:C:CCdonor_gain0.9900
1:1535766:CGTCG:Cacceptor_gain0.9900
1:1535769:CG:Cacceptor_gain0.9900
1:1535770:G:Cacceptor_gain0.9900
1:1539678:ACTCA:Adonor_loss0.9900
1:1539679:CT:Cdonor_loss0.9900
1:1539681:C:CCdonor_loss0.9900
1:1539682:A:ACdonor_gain0.9900
1:1539682:ACCGG:Adonor_gain0.9900
1:1539683:C:CCdonor_gain0.9900
1:1539683:C:CTdonor_loss0.9900
1:1539683:CCGG:Cdonor_gain0.9900
1:1539683:CCGGC:Cdonor_gain0.9900
1:1535503:GCCAT:Gacceptor_gain0.9800
1:1535504:CCATC:Cacceptor_gain0.9800
1:1535505:CAT:Cacceptor_gain0.9800
1:1535507:TCT:Tacceptor_loss0.9800
1:1535508:C:CGacceptor_loss0.9800
1:1535509:T:Aacceptor_loss0.9800
1:1535581:GCACT:Gdonor_loss0.9800

AlphaMissense

1145 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
1:1535673:C:GG97R1.000
1:1535685:C:GG93R1.000
1:1535685:C:TG93R1.000
1:1539740:G:CN36K1.000
1:1539740:G:TN36K1.000
1:1535659:G:CS101R0.999
1:1535659:G:TS101R0.999
1:1535661:T:GS101R0.999
1:1535672:C:TG97D0.999
1:1535681:A:GL94P0.999
1:1535684:C:TG93E0.999
1:1535693:A:GL90P0.999
1:1539695:G:CC51W0.999
1:1539696:C:TC51Y0.999
1:1539701:G:CC49W0.999
1:1539702:C:TC49Y0.999
1:1539703:A:GC49R0.999
1:1539718:C:AG44C0.999
1:1539747:A:GF34S0.999
1:1539771:T:AD26V0.999
1:1535685:C:AG93W0.998
1:1539689:A:CC53W0.998
1:1539690:C:TC53Y0.998
1:1539696:C:AC51F0.998
1:1539696:C:GC51S0.998
1:1539697:A:GC51R0.998
1:1539697:A:TC51S0.998
1:1539702:C:GC49S0.998
1:1539703:A:TC49S0.998
1:1539717:C:AG44V0.998

dbSNP variants (sampled 300 via entrez): RS1000224402 (1:1542576 A>G), RS1000385463 (1:1538392 G>A,C), RS1000613929 (1:1541939 A>G), RS1000965654 (1:1538981 G>A), RS1001081804 (1:1539123 T>C), RS1001124110 (1:1537515 G>T), RS1001413772 (1:1538254 A>G,T), RS1001505289 (1:1534597 G>A,T), RS1001536476 (1:1534739 C>A,T), RS1001990456 (1:1540648 T>C), RS1002289519 (1:1541023 GC>G), RS1002367933 (1:1542299 C>G,T), RS1002550031 (1:1539651 C>G,T), RS1002603844 (1:1539939 G>C), RS1002781884 (1:1536143 C>T)

Disease associations

OMIM: gene MIM:616101 | disease phenotypes: MIM:607454, MIM:607872, MIM:616719

GenCC curated gene-disease

DiseaseClassificationInheritance
spinocerebellar ataxia type 21DefinitiveAutosomal dominant

Mondo (5): spinocerebellar ataxia type 21 (MONDO:0011833), chromosome 1p36 deletion syndrome (MONDO:0011929), neurodevelopmental disorder (MONDO:0700092), acute infantile liver failure-cerebellar ataxia-peripheral sensory motor neuropathy syndrome (MONDO:0014744), intellectual disability (MONDO:0001071)

Orphanet (4): Spinocerebellar ataxia type 21 (Orphanet:98773), 1p36 deletion syndrome (Orphanet:1606), Acute infantile liver failure-cerebellar ataxia-peripheral sensory motor neuropathy syndrome (Orphanet:466794), NON RARE IN EUROPE: Unexplained intellectual disability (Orphanet:319658)

HPO phenotypes

41 total (30 of 41 shown, HPO-id order):

HPOTerm
HP:0000006Autosomal dominant inheritance
HP:0000486Strabismus
HP:0000514Slow saccadic eye movements
HP:0000639Nystagmus
HP:0000651Diplopia
HP:0000708Atypical behavior
HP:0000718Aggressive behavior
HP:0000741Apathy
HP:0001249Intellectual disability
HP:0001251Ataxia
HP:0001260Dysarthria
HP:0001263Global developmental delay
HP:0001265Hyporeflexia
HP:0001268Mental deterioration
HP:0001272Cerebellar atrophy
HP:0001300Parkinsonism
HP:0001332Dystonia
HP:0001337Tremor
HP:0002063Rigidity
HP:0002066Gait ataxia
HP:0002070Limb ataxia
HP:0002071Abnormality of extrapyramidal motor function
HP:0002073Progressive cerebellar ataxia
HP:0002080Intention tremor
HP:0002168Scanning speech
HP:0002174Postural tremor
HP:0002188Delayed CNS myelination
HP:0002304Akinesia
HP:0002396Cogwheel rigidity
HP:0003596Middle age onset

GWAS associations

1 associations (top):

StudyTraitp-value
GCST005951_34Body mass index3.000000e-08

EFO canonical traits (1, from GWAS)

EFO IDTrait name
EFO:0004340body mass index

MeSH disease descriptors (4)

DescriptorNameTree numbers
D008607Intellectual DisabilityC10.597.606.360; C23.888.592.604.646; F01.700.687; F03.625.539
D065886Neurodevelopmental DisordersF03.625
C535362Chromosome 1p36 Deletion Syndrome (supp.)
C537200Spinocerebellar ataxia 21 (supp.)

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

CTD chemical–gene interactions

14 total (human), top 14 by PubMed support.

ChemicalActions (top 5)PubMed papers
Benzo(a)pyrenedecreases expression, decreases methylation2
aristolochic acid Iincreases expression1
triphenyl phosphateaffects expression1
bisphenol Aaffects cotreatment, decreases methylation1
Grape Seed Proanthocyanidinsaffects cotreatment, increases expression1
Sunitinibdecreases expression1
Fulvestrantaffects cotreatment, decreases methylation1
Catechinincreases expression, affects cotreatment1
Smokedecreases expression1
Tobacco Smoke Pollutionincreases expression1
Valproic Acidincreases methylation1
1-Methyl-4-phenylpyridiniumincreases expression1
Aflatoxin B1decreases expression1
Okadaic Aciddecreases expression1

Clinical trials (associated diseases)

298 trials via MONDO — disease-level, not drug-specific.

TrialPhaseStatusTitle
NCT04586348PHASE4UNKNOWNPrenatal Iodine Supplementation and Early Childhood Neurodevelopment
NCT04873115PHASE4UNKNOWNDouble-blind, Placebo-controlled, Randomized Clinical Trial Comparing the Efficacy and Safety of Sialanar Plus orAl rehabiLitation Against Placebo Plus Oral Rehabilitation for chIldren and Adolescents With seVere Sialorrhoea and Neurodisabilties,
NCT05657860PHASE4COMPLETEDGuanfacine Extended Release for the Reduction of Aggression and Self-injurious Behavior Associated With Prader-Willi Syndrome
NCT05744479PHASE4RECRUITINGMetformin for Antipsychotic-induced Weight Gain in Adults With Intellectual Disability
NCT06107829PHASE4WITHDRAWNValbenazine Treatment of Tardive Dyskinesia in Adults With Intellectual/Developmental Disabilities
NCT06997198PHASE4NOT_YET_RECRUITINGDeutetrabenazine Treatment for Tardive Dyskinesia in Intellectual/Developmental Disabilities
NCT02559102PHASE3COMPLETEDDexmedetomidine Sedation Versus General Anaesthesia for Inguinal Hernia Surgery in Infants
NCT02757079PHASE3COMPLETEDStudy of the Efficacy and Safety of NPC-15 for Sleep Disorders of Children With Neurodevelopmental Disorders
NCT06915480PHASE3RECRUITINGReducing Missed Appointments
NCT07377032PHASE3RECRUITINGTAP-GRIN: Interventional Study on Patients With GRIN-related Neurodevelopmental Disorders
NCT02270736PHASE3COMPLETEDClinical Study to Investigate the Efficacy and Safety of NT 201 Compared to Placebo in the Treatment of Chronic Troublesome Drooling Associated With Neurological Disorders and/or Intellectual Disability
NCT02909959PHASE2COMPLETEDSulforaphane for the Treatment of Young Men With Autism Spectrum Disorder
NCT06081348PHASE2RECRUITINGSertraline vs. Placebo in the Treatment of Anxiety in Children and AdoLescents With NeurodevelopMental Disorders
NCT06352372PHASE2COMPLETEDSafety and Efficacy of tPBM for Epileptiform Activity in Autism
NCT02304302PHASE2COMPLETEDDown Syndrome Memantine Follow-up Study
NCT03862950PHASE2COMPLETEDA Trial of Metformin in Individuals With Fragile X Syndrome (Met)
NCT04529226PHASE2UNKNOWNStudy to Compare Clozapine vs Treatment as Usual in People With Intellectual Disability & Treatment-resistant Psychosis
NCT04821856PHASE2COMPLETEDEvaluation of the Effectiveness of Cannabidiol in Treating Severe Behavioural Problems in Children and Adolescents With Intellectual Disability
NCT00503191PHASE1COMPLETEDNeuroModulation Technique Treatment of Autism
NCT04475848PHASE1COMPLETEDA Study to Investigate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics and Food Effect of RO6953958 in Healthy Participants
NCT06300398PHASE1COMPLETEDIAMA-6 Oral Dose Study in Healthy Adults
NCT05273320PHASE1COMPLETEDClinical Trial of Nabilone for Aggression in Adults With Intellectual and Developmental Disabilities
NCT05301361PHASE1ENROLLING_BY_INVITATIONSensitivity of the NIH Toolbox to Stimulant Treatment in Intellectual Disabilities
NCT06016764PHASE1COMPLETEDUse of MRI and cTBS for Catatonia in Autism
NCT06586827PHASE1COMPLETEDImpact of Competency-Based Training and Technical Assistance Employment Outcomes of Individuals With ID/DD
NCT07531940PHASE1NOT_YET_RECRUITINGEscalating Doses of Memantine in Down Syndrome (MEDS-123)
NCT01793168Not specifiedRECRUITINGRare Disease Patient Registry & Natural History Study - Coordination of Rare Diseases at Sanford
NCT02381457Not specifiedCOMPLETEDSNP-based Microdeletion and Aneuploidy RegisTry (SMART)
NCT01783041PHASE2/PHASE3COMPLETEDEffect of Early L-Carnitine Supplementation on Neurodevelopmental Outcomes in Very Preterm Infants
NCT05767385PHASE2/PHASE3RECRUITINGFetal Cerebrovascular Autoregulation in Congenital Heart Disease and Association With Neonatal Neurobehavior
NCT05675098EARLY_PHASE1NOT_YET_RECRUITINGCentral Nervous System Stimulants and Physical Function in Children With Cerebral Palsy
NCT00783783Not specifiedCOMPLETEDCYP2D6 Pharmacogenetics in Risperidone-Treated Children
NCT01778504Not specifiedRECRUITINGStudying Childhood-onset Behavioral, Psychiatric, and Developmental Disorders
NCT01850784Not specifiedUNKNOWNHigh Energy Formula Feeding in Infants With Congenital Heart Disease
NCT01922791Not specifiedCOMPLETEDNutrition and Pregnancy Intervention Study
NCT01942525Not specifiedUNKNOWNInfluence of Intrauterine Growth Restriction on Amplitude-integrated EEG in Preterm Infants
NCT02003170Not specifiedCOMPLETEDEtiology and Early Diagnosis of Neurodevelopmental Disorders
NCT02118649Not specifiedACTIVE_NOT_RECRUITINGEnhancing Behavior and Brain Response to Visual Targets Using a Computer Game
NCT02557191Not specifiedTERMINATEDBiomarkers, Neurodevelopment and Preterm Infants
NCT02690675Not specifiedCOMPLETEDIron Supplement Effect on Child Development