raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:470

Lysinuric protein intolerance

Synonyms: Hyperdibasic aminoaciduria · LPI

Type
Disease
Group
Disorder
Inheritance
Autosomal recessive
Age of onset
Infancy, Neonatal
Status
active

A rare disorder of amino acid absorption and transport characterized by a secondary urea cycle disorder with failure to thrive, hepatosplenomegaly, and a wide range of clinical manifestations including hematological (macrophagic activation syndrome or hemophagocytic lymphohistiocytosis, HLH), immune, digestive, renal, pulmonary and/or bones involvement.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enLysinuric protein intoleranceHyperdibasic aminoaciduria · LPI
frIntolérance aux protéines dibasiques avec lysinurieAminoacidurie hyperdibasique · ILPD · LPI
deLysinurische ProteinintoleranzAminoazidurie, hyperdibasische, Typ 2 · LPI
esLisinuria con intolerancia a proteínasAminoaciduria hiperdibásica tipo 2
itIntolleranza alle proteine con lisinuriaAminoaciduria bibasica, tipo 2 · IPL
nlLysinurische proteïne-intolerantieHyperdibasische aminoacidurie · LPI · Lysine-eiwitintolerantie · Lysinurische eiwitintolerantie
ptIntolerância à proteína lisinúricaAminoacidúria hiperdibásica · LPI
plLizynuryczna nietolerancja białkaAminoacyduria dwuzasadowa typu 2 · LPI
csIntolerance bílkovin s lysinuriíHyperdibazická aminoacidurie, typ 2 · LPI
ukНепереносимість лізинуричного білкаГіпердігідроаміноацидурія · LPI
zh赖氨酸尿性蛋白耐受不良高双碱基氨基酸尿症
trLizinürik protein intoleransıLPI · Hiperdibazik aminoasidüri

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM222700Evalidated
ICD-10E72.0NTBTattributedvalidated
ICD-115C60.YNTBTindexvalidated
MONDO0009109Evalidated
MeSHC562687Evalidated
UMLSC0268647Evalidated
GARD3335Evalidated
MedDRA10058300Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (2):

No children.

Codes that Orphanet moved or referred to this one:

4

Genes

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
SLC7A7Disease-causing germline mutation(s) inAssessedHGNC:11065ENSG0000015546560359314q11.2solute carrier family 7 member 720301535[PMID]
5

Prevalence and incidence

5 records
TypeClassValueAreaQualificationValidationSource
Prevalence at birth1-9 / 100 000—EuropeClass onlyNot yet validatedORPHANET
Prevalence at birth1-9 / 100 0001.7 / 100 000ItalyValue and classValidated[EXPERT]
Prevalence at birth1-9 / 100 0001.7 / 100 000FinlandValue and classValidated15050971[PMID]
Prevalence at birth1-9 / 100 0001.75 / 100 000JapanValue and classValidated10980538[PMID]
Point prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

77 annotations · validated 2024-03-15
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0001508Failure to thrive
Frequent (79-30%)
HP:0001892Abnormal bleeding
HP:0006530Abnormal pulmonary interstitial morphology
HP:0000091Abnormal renal tubule morphology
HP:0012278Abnormality of serine metabolism
HP:0001903Anemia
HP:0003268Argininuria
HP:0031020Bone marrow hypercellularity
HP:0012622Chronic kidney disease
HP:0001394Cirrhosis
HP:0100543Cognitive impairment
HP:0003233Decreased HDL cholesterol concentration
HP:0012213Decreased glomerular filtration rate
HP:0002750Delayed skeletal maturation
HP:0002014Diarrhea
HP:0002910Elevated circulating hepatic transaminase concentration
HP:0011966Elevated plasma citrulline
HP:0011968Feeding difficulties
HP:0008947Floppy infant
HP:0000099Glomerulonephritis
HP:0001510Growth delay
HP:0000790Hematuria
HP:0012156Hemophagocytosis
HP:0001399Hepatic failure
HP:0002240Hepatomegaly
HP:0001433Hepatosplenomegaly
HP:0003348Hyperalaninemia
HP:0001987Hyperammonemia
HP:0003124Hypercholesterolemia
HP:0003217Hyperglutaminemia
HP:0002154Hyperglycinemia
HP:0003297Hyperlysinuria
HP:0008358Hyperprolinemia
HP:0002155Hypertriglyceridemia
HP:0003141Increased LDL cholesterol concentration
HP:0025435Increased circulating lactate dehydrogenase concentration
HP:0001249Intellectual disability
HP:0006517Intraalveolar phospholipid accumulation
HP:0001882Leukopenia
HP:0000121Nephrocalcinosis
HP:0012523Oral aversion
HP:0000938Osteopenia
HP:0000939Osteoporosis
HP:0000093Proteinuria
HP:0000124Renal tubular dysfunction
HP:0002093Respiratory insufficiency
HP:0002570Steatorrhea
HP:0001873Thrombocytopenia
HP:0002013Vomiting
Occasional (29-5%)
HP:0001627Abnormal heart morphology
HP:0010701Abnormal immunoglobulin level
HP:0005368Abnormality of humoral immunity
HP:0020151Anti-dsDNA antibody positivity
HP:0001259Coma
HP:0012280Hepatic amyloidosis
HP:0000822Hypertension
HP:0011900Hypofibrinogenemia
HP:0003281Increased circulating ferritin concentration
HP:0011424Increased serum zinc
HP:0001254Lethargy
HP:0005548Megakaryocytopenia
HP:0012578Membranous nephropathy
HP:0003532Ornithinuria
HP:0003218Oroticaciduria
HP:0001733Pancreatitis
HP:0002206Pulmonary fibrosis
HP:0001917Renal amyloidosis
HP:0030760Renal fibrosis
HP:0001947Renal tubular acidosis
HP:0001970Tubulointerstitial nephritis
Very rare (<4-1%)
HP:0003493Antinuclear antibody positivity
HP:0004431Complement deficiency
HP:0004313Decreased circulating antibody level
HP:0000824Decreased response to growth hormone stimulation test
HP:0010702Increased circulating immunoglobulin concentration
HP:0002756Pathologic fracture
HP:0002718Recurrent bacterial infections

Run the differential on the 1 obligate / very frequent terms

Annotation source: 20301535[PMID]_20301535[PMID]_28057010[PMID]_8163273[PMID]_7204568[PMID]_6076999[PMID]_4158034[PMID]

7

Sources for this card