Hyperphenylalaninemia, Mild, Non-bh4-deficient; Hpanbh4

Description

Mild non-BH4-deficient hyperphenylalaninemia (HPANBH4) is an autosomal recessive disorder characterized by increased serum phenylalanine usually detected by newborn screening and associated with highly variable neurologic defects, including movement abnormalities and intellectual disability. Laboratory analysis shows dopamine and serotonin deficiencies in the cerebrospinal fluid, and normal BH4 metabolism. Evidence suggests that treatment with neurotransmitter precursors can lead to clinical improvement or even prevent the neurologic defects if started in infancy (summary by Anikster et al., 2017).

Genes related to Hyperphenylalaninemia, Mild, Non-bh4-deficient; Hpanbh4

DNAJC12

Clinical Features

Top most frequent phenotypes and symptoms related to Hyperphenylalaninemia, Mild, Non-bh4-deficient; Hpanbh4

Intellectual disability
Seizures
Global developmental delay
Generalized hypotonia
Nystagmus
Delayed speech and language development
Hypertonia
Intellectual disability, mild
Dystonia
Obesity

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Incidence and onset information

— Not enough data available about incidence and published cases.

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Hyperphenylalaninemia, Mild, Non-bh4-deficient; Hpanbh4 Recommended genes panels

Panel Name, Specifity and genes Tested/covered
DNAJC12 Sequencing. By Cincinnati Children's Hospital Medical Center Laboratory of Genetics and Genomics Cincinnati Children's Hospital Medical Center in United States. DNAJC12 Specificity 100 % Genes 100 %
Dystonia Exome Panel. By Genetic Services Laboratory University of Chicago in United States. AARS2, UQCRQ, ATP7B, AUH, BCS1L, PSEN1, GLB1, HPRT1, POLG, NDUFS4, AFG3L2, FOXRED1, NDUFAF2, PANK2, MECP2, NDUFA12, NDUFA9, TTC19, NDUFA10, SCP2 , (...) View the complete list with 150 more genes Panel GTR000553219 complete gene list AARS2, UQCRQ, ATP7B, AUH, BCS1L, PSEN1, GLB1, HPRT1, POLG, NDUFS4, AFG3L2, FOXRED1, NDUFAF2, PANK2, MECP2, NDUFA12, NDUFA9, TTC19, NDUFA10, SCP2, GAMT, SPR, STXBP1, SUCLA2, COQ8A, HTRA2, CTSD, GRN, PARK7, PINK1, SQSTM1, PDHA1, TIMM8A, MMADHC, HEXA, GM2A, SUOX, PTS, QDPR, NDUFA2, COX15, SURF1, NDUFS8, NDUFS7, NDUFS3, NDUFAF6, SDHAF1, NDUFS1, NDUFV1, NDUFS2, NDUFAF5, MCEE, MMAB, MMAA, MUT, DLAT, L2HGDH, CBS, GCDH, LRPPRC, CYP27A1, PRKN, APTX, TPP1, CLN3, PNKD, TACO1, SLC6A8, PDHX, SDHA, ARSA, ARX, FOXG1, NPC1, NPC2, PLP1, SLC2A1, ATM, CLN6, CLN8, PPT1, TH, MLC1, CLN5, PLA2G6, TOR1A, THAP1, GCH1, SGCE, BSCL2, FA2H, ALS2, ATP1A2, ATP1A3, SLC19A3, SYNJ1, TBC1D24, PRRT2, COL4A1, CTSF, DNAJC5, MFSD8, ATP13A2, GNAO1, WDR45, SCN8A, PNKP, SAMHD1, RNASEH2A, RNASEH2C, RNASEH2B, TREX1, VPS13A, FUCA1, TAF1, SLC16A2, AARS, NKX2-1, TOR1AIP1, HACE1, IFIH1, C19orf12, TUBB4A, ADAR, FTL, CP, COASY, DCAF17, COX10, CSF1R, TPK1, SLC20A2, FBXO7, EARS2, DDC, SLC6A3, VPS35, XK, TPI1, PRKRA, DNAJC12, MICU1, HEPACAM, COX20, PDGFRB, PDGFB, SERAC1, CLPB, MDH2, KMT2B, MECR, TBCD, UBA5, VAC14, SLC39A14, DNAJC6, GNB1, HIVEP2, ANO3, XPR1, HPCA, KCTD17, LIPT1, ECHS1, BCAP31, GNAL, ADCY5, SLC30A10, ACY1, NUP62 Specificity 1 % Genes 100 %
Hyperphenylalaninemia via the DNAJC12 Gene. By PreventionGenetics PreventionGenetics in United States. DNAJC12 Specificity 100 % Genes 100 %
Hyperphenylalaninemia, mild, non-BH4-deficient (DNAJC12 gene). By VU University Medical Center Metabolic Unit, PX 1X 009 in Netherlands. DNAJC12 Specificity 100 % Genes 100 %

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