Human Gene Set: HP_FLOPPY_INFANT


Standard name HP_FLOPPY_INFANT
Systematic name M37312
Brief description Floppy infant
Full description or abstract Floppiness/hypotonia is defined as reduced resistance to passive movement of joints. Physical examination of floppy/hypotonic infants shows head lag, lack of shoulder and elbow muscle contraction on traction response, inability to tighten the shoulder girdle muscles (or slipping through) when held under the axillae, scarf sign (when the arm is pulled to the opposite side, the arm wraps around the neck with the elbow crossing midline), hyperdorsiflexion of the feet, easy apposition of the thumb against the forearm, feet touching the cheek with ease and without discomfort, frog leg position, and inverted U sign on ventral suspension (head, arms, and legs hanging down without elbow or knee flexion and the trunk rounded in a dome shape). [PMID:19078754]
Collection C5: Ontology
      HPO: Human Phenotype Ontology
Source publication  
Exact source HP:0008947
Related gene sets  
External links https://hpo.jax.org/app/browse/term/HP:0008947
Filtered by similarity ?
Source species Homo sapiens
Contributed by Human Phenotype Ontology Group (The Jackson Laboratory (JAX))
Source platform or
identifier namespace		 Human_NCBI_Gene_ID
Dataset references  
Download gene set format: grp | gmt | xml | json | TSV metadata
Compute overlaps ? (show collections to investigate for overlap with this gene set)
Compendia expression profiles ? NG-CHM interactive heatmaps
(Please note that clustering takes a few seconds)
GTEx compendium
Human tissue compendium (Novartis)
Global Cancer Map (Broad Institute)
NCI-60 cell lines (National Cancer Institute)

Legacy heatmaps (PNG)
GTEx compendium
Human tissue compendium (Novartis)
Global Cancer Map (Broad Institute)
NCI-60 cell lines (National Cancer Institute)
Advanced query Further investigate these 199 genes
Gene families ? Categorize these 199 genes by gene family
Show members (show 199 source identifiers mapped to 199 genes)
Version history 2026.1.Hs: Updated to HPO Release 2026-01-08.


Creative Commons Attribution 4.0 International License (CC-BY-4.0)

The contents of this gene set are protected by copyright (c) 2004-2026 Broad Institute, Inc., Massachusetts Institute of Technology, and Regents of the University of California, subject to the terms and conditions of the Creative Commons Attribution 4.0 International License.

See the full MSigDB license terms here.